SEPTEMBER 24TH, 1926-The temperature at Yellowstone Park dipped to nine degrees below zero. It was the coldest reading of record in the U.S. during September.
Rise 7:14AM
Set 7:16PM
Reporting Station : West Yellowstone Airport, MT
Clear. Cool.
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Rise 7:14AM
Set 7:16PM
Last Quarter
Rise11:35PM
Set3:35PM
No Airport Delays Found
SEPTEMBER 24TH, 1926-The temperature at Yellowstone Park dipped to nine degrees below zero. It was the coldest reading of record in the U.S. during September.
SEPTEMBER 24TH, 1926 |
The temperature at Yellowstone Park dipped to nine degrees below zero. It was the coldest reading of record in the U.S. during September. |
SEPTEMBER 24TH, 1950 |
A smoke pall from western Canada forest fires covered much of the eastern U.S. Daylight was reduced to nighttime darkness in parts of the Northeast. The color of the sun varied from pink to purple, blue, or lavendar. Yellow to grey-tan was common. |
SEPTEMBER 23RD, 1983 |
A thunderstorm downburst caused a timber blowdown in the Kaibab National Forest north of the Grand Canyon. Two hundred acres were completely destroyed, and scattered destruction occurred across another 3300 acres. Many trees were snapped off 15 to 30 feet above ground level. |
SEPTEMBER 23RD, 1815 |
One of the greatest hurricanes to strike New England made landfall at Long Island and crossed Massachusetts and New Hampshire. It was the worst tempest in nearly two hundred years, equal to the hurricane which struck in 1938, and one of a series of severe summer and autumn storms to affect shipping lanes that year. |
SEPTEMBER 22ND, 1961 |
Hurricane Esther made a near complete circle south of Cape Cod. The hurricane then passed over Cape Cod and hit Maine. Its energy was largely spent over the North Atlantic Ocean, however, heavy rains over Maine resulted in widespread local flooding of cellars, low roads, and underpasses. |
SEPTEMBER 22ND, 1987 |
Hurricane Emily, the first hurricane to roam the Carribean in nearly six years, made landfall over the Dominican Republic late in the day, packing 125 mph winds. Emily killed three persons and caused thirty million dollars damage. |
SEPTEMBER 21ST, 1894 |
A heavy chicken house, sixteen by sixteen feet in area, was picked up by a tornado and wedged between two trees. The hens were found the next day sitting on their eggs in the chicken house, with no windows broken, as though nothing had happened. |
SEPTEMBER 21ST, 1938 |
The Great Hurricane of 1938, one of the worst storms in U.S. history, strikes an unexpecting and unprepared New England and other Eastern Seaboard areas. After a devastating landfall in Long Island, the storm lays waste to 40,000 square miles across New York and New England; 600 lose their lives as losses soar to over $350 million, including the destruction of 20,000 homes and 26,000 automobiles. |
SEPTEMBER 20TH, 1845 |
The Adirondack Tornado cuts a 275 mi (443 km) swath from Canada to New York, leaving waterspouts whirling on Lake Ontario and Lake Champlain and windfall damage in forests that was still visible over a century later. |
SEPTEMBER 20TH, 1967 |
Hurricane Beulah moved into South Texas, and torrential rains from the hurricane turned the rich agricultural areas of South Texas into a large lake. Hurricane Beulah also spawned a record 115 tornadoes. |
SEPTEMBER 19TH, 1947 |
The eye of a hurricane passed directly over New Orleans, and the barometric pressure dipped to 28.61 inches. The hurricane killed fifty-one persons, and caused 110 million dollars damage. It produced wind gusts to 155 mph while making landfall over Fort Lauderdale FL two days earlier. |
Issued By | NWS Field Office | Broadcast Time | Mon, 29 Dec 2014 03:43:00 PST |
Issuing Time | Mon, 29 Dec 2014 03:43:00 PST | Valid Until | Mon, 29 Dec 2014 03:43:00 PST |
Strong northerly winds are forecast to develop across the San Francisco Bay Area by midday Tuesday and continue through midday Wednesday. A strong..cold and dry storm system will sweep into northern and central California late Monday night and Tuesday morning. This system will generate strong and gusty north to northest winds across the region from midday Tuesday through midday Wednesday.
Rise 7:14AM
Set 7:16PM
Last Quarter
Rise11:35PM
Set3:35PM
No Airport Delays Found
History | |||
Weather Station: Helena Regional Airport , MT , US | |||
September Data | Choose another month |
Averages | |
Average High Temperature
-1.70 °C
|
Average Low Temperature
-12.80 °C
|
Average Mean Temp
-7.20 °C
|
Average Dew Point
-12.80 °C
|
Average Windspeed
16.70 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
71.0
|
Average Afternoon Relative Humidity
63.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
1.52
|
Average Snowfall (US Only)
22.80
|
|
Daily Counts | |
Days With Precipitation
8
|
Days With Thunderstorms
*
|
Days With Fog
3
|
Days With Snow
8
|
Days With Lows Below Freezing
29
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
16.70 °C
|
Record Low
-41.10 °C
|
Record Wind Speed
109.30 km/h
|
Record Monthly Snowfall
91.4 cm
|
Record 24-hour Snowfall
22.80 cm
|
Record Monthly Rainfall
71 mm
|
Record 24-hour Rainfall
15 mm
|
Record Minimum Monthly Precipitation
* mm
|
Averages | |
Average High Temperature
2.20 °C
|
Average Low Temperature
-9.40 °C
|
Average Mean Temp
-3.30 °C
|
Average Dew Point
-9.40 °C
|
Average Windspeed
18.50 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
72.0
|
Average Afternoon Relative Humidity
56.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
1.02
|
Average Snowfall (US Only)
15.20
|
|
Daily Counts | |
Days With Precipitation
7
|
Days With Thunderstorms
*
|
Days With Fog
2
|
Days With Snow
6
|
Days With Lows Below Freezing
26
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
20.00 °C
|
Record Low
-36.10 °C
|
Record Wind Speed
101.90 km/h
|
Record Monthly Snowfall
50.8 cm
|
Record 24-hour Snowfall
20.30 cm
|
Record Monthly Rainfall
30 mm
|
Record 24-hour Rainfall
13 mm
|
Record Minimum Monthly Precipitation
* mm
|
Averages | |
Average High Temperature
6.10 °C
|
Average Low Temperature
-6.10 °C
|
Average Mean Temp
0.60 °C
|
Average Dew Point
-7.20 °C
|
Average Windspeed
18.50 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
72.0
|
Average Afternoon Relative Humidity
48.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
1.78
|
Average Snowfall (US Only)
20.30
|
|
Daily Counts | |
Days With Precipitation
9
|
Days With Thunderstorms
*
|
Days With Fog
2
|
Days With Snow
7
|
Days With Lows Below Freezing
28
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
25.00 °C
|
Record Low
-34.40 °C
|
Record Wind Speed
96.30 km/h
|
Record Monthly Snowfall
55.8 cm
|
Record 24-hour Snowfall
22.80 cm
|
Record Monthly Rainfall
41 mm
|
Record 24-hour Rainfall
15 mm
|
Record Minimum Monthly Precipitation
* mm
|
Averages | |
Average High Temperature
13.30 °C
|
Average Low Temperature
-1.10 °C
|
Average Mean Temp
6.10 °C
|
Average Dew Point
-3.30 °C
|
Average Windspeed
18.50 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
71.0
|
Average Afternoon Relative Humidity
39.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
2.28
|
Average Snowfall (US Only)
15.20
|
|
Daily Counts | |
Days With Precipitation
8
|
Days With Thunderstorms
1
|
Days With Fog
1
|
Days With Snow
4
|
Days With Lows Below Freezing
18
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
29.40 °C
|
Record Low
-17.20 °C
|
Record Wind Speed
92.60 km/h
|
Record Monthly Snowfall
53.3 cm
|
Record 24-hour Snowfall
33.00 cm
|
Record Monthly Rainfall
76 mm
|
Record 24-hour Rainfall
25 mm
|
Record Minimum Monthly Precipitation
0.25 mm
|
Averages | |
Average High Temperature
18.30 °C
|
Average Low Temperature
4.40 °C
|
Average Mean Temp
11.70 °C
|
Average Dew Point
1.10 °C
|
Average Windspeed
18.50 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
73.0
|
Average Afternoon Relative Humidity
39.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
4.57
|
Average Snowfall (US Only)
5.10
|
|
Daily Counts | |
Days With Precipitation
11
|
Days With Thunderstorms
4
|
Days With Fog
1
|
Days With Snow
1
|
Days With Lows Below Freezing
4
|
Days above 90° F (32.2° C)
*
|
Records | |
Record High
33.30 °C
|
Record Low
-8.30 °C
|
Record Wind Speed
111.10 km/h
|
Record Monthly Snowfall
33.0 cm
|
Record 24-hour Snowfall
33.00 cm
|
Record Monthly Rainfall
155 mm
|
Record 24-hour Rainfall
53 mm
|
Record Minimum Monthly Precipitation
0.76 mm
|
Averages | |
Average High Temperature
23.30 °C
|
Average Low Temperature
8.30 °C
|
Average Mean Temp
16.10 °C
|
Average Dew Point
5.00 °C
|
Average Windspeed
18.50 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
73.0
|
Average Afternoon Relative Humidity
39.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
4.82
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
11
|
Days With Thunderstorms
7
|
Days With Fog
1
|
Days With Snow
*
|
Days With Lows Below Freezing
*
|
Days above 90° F (32.2° C)
2
|
Records | |
Record High
37.80 °C
|
Record Low
-1.10 °C
|
Record Wind Speed
103.70 km/h
|
Record Monthly Snowfall
7.6 cm
|
Record 24-hour Snowfall
7.60 cm
|
Record Monthly Rainfall
109 mm
|
Record 24-hour Rainfall
46 mm
|
Record Minimum Monthly Precipitation
0.25 mm
|
Averages | |
Average High Temperature
28.30 °C
|
Average Low Temperature
11.10 °C
|
Average Mean Temp
20.00 °C
|
Average Dew Point
6.70 °C
|
Average Windspeed
16.70 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
67.0
|
Average Afternoon Relative Humidity
30.0
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
2.79
|
Average Snowfall (US Only)
*
|
|
Daily Counts | |
Days With Precipitation
7
|
Days With Thunderstorms
8
|
Days With Fog
*
|
Days With Snow
0
|
Days With Lows Below Freezing
0
|
Days above 90° F (32.2° C)
8
|
Records | |
Record High
38.90 °C
|
Record Low
2.20 °C
|
Record Wind Speed
129.60 km/h
|
Record Monthly Snowfall
* cm
|
Record 24-hour Snowfall
* cm
|
Record Monthly Rainfall
99 mm
|
Record 24-hour Rainfall
36 mm
|
Record Minimum Monthly Precipitation
0.25 mm
|
Averages | |
Average High Temperature
27.80 °C
|
Average Low Temperature
10.60 °C
|
Average Mean Temp
18.90 °C
|
Average Dew Point
6.10 °C
|
Average Windspeed
14.80 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
67.0
|
Average Afternoon Relative Humidity
30.0
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
3.05
|
Average Snowfall (US Only)
0.00
|
|
Daily Counts | |
Days With Precipitation
8
|
Days With Thunderstorms
8
|
Days With Fog
*
|
Days With Snow
0
|
Days With Lows Below Freezing
*
|
Days above 90° F (32.2° C)
6
|
Records | |
Record High
40.60 °C
|
Record Low
0.00 °C
|
Record Wind Speed
98.20 km/h
|
Record Monthly Snowfall
0.0 cm
|
Record 24-hour Snowfall
0.00 cm
|
Record Monthly Rainfall
107 mm
|
Record 24-hour Rainfall
46 mm
|
Record Minimum Monthly Precipitation
* mm
|
Averages | |
Average High Temperature
21.10 °C
|
Average Low Temperature
5.00 °C
|
Average Mean Temp
13.30 °C
|
Average Dew Point
2.20 °C
|
Average Windspeed
16.70 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
72.0
|
Average Afternoon Relative Humidity
36.0
|
Typical Sky Cover
CLR
|
Average Precipitation (US Only)
2.54
|
Average Snowfall (US Only)
5.10
|
|
Daily Counts | |
Days With Precipitation
7
|
Days With Thunderstorms
2
|
Days With Fog
1
|
Days With Snow
1
|
Days With Lows Below Freezing
3
|
Days above 90° F (32.2° C)
1
|
Records | |
Record High
37.20 °C
|
Record Low
-7.80 °C
|
Record Wind Speed
87.00 km/h
|
Record Monthly Snowfall
35.5 cm
|
Record 24-hour Snowfall
33.00 cm
|
Record Monthly Rainfall
86 mm
|
Record 24-hour Rainfall
41 mm
|
Record Minimum Monthly Precipitation
0.25 mm
|
Averages | |
Average High Temperature
14.40 °C
|
Average Low Temperature
-0.60 °C
|
Average Mean Temp
7.20 °C
|
Average Dew Point
-1.70 °C
|
Average Windspeed
16.70 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
73.0
|
Average Afternoon Relative Humidity
43.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
1.52
|
Average Snowfall (US Only)
5.10
|
|
Daily Counts | |
Days With Precipitation
6
|
Days With Thunderstorms
*
|
Days With Fog
1
|
Days With Snow
2
|
Days With Lows Below Freezing
17
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
29.40 °C
|
Record Low
-19.40 °C
|
Record Wind Speed
87.00 km/h
|
Record Monthly Snowfall
27.9 cm
|
Record 24-hour Snowfall
17.80 cm
|
Record Monthly Rainfall
69 mm
|
Record 24-hour Rainfall
20 mm
|
Record Minimum Monthly Precipitation
* mm
|
Averages | |
Average High Temperature
5.60 °C
|
Average Low Temperature
-6.10 °C
|
Average Mean Temp
0.00 °C
|
Average Dew Point
-6.70 °C
|
Average Windspeed
16.70 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
73.0
|
Average Afternoon Relative Humidity
58.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
1.27
|
Average Snowfall (US Only)
15.20
|
|
Daily Counts | |
Days With Precipitation
7
|
Days With Thunderstorms
*
|
Days With Fog
2
|
Days With Snow
5
|
Days With Lows Below Freezing
26
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
22.20 °C
|
Record Low
-39.40 °C
|
Record Wind Speed
98.20 km/h
|
Record Monthly Snowfall
83.8 cm
|
Record 24-hour Snowfall
48.20 cm
|
Record Monthly Rainfall
38 mm
|
Record 24-hour Rainfall
15 mm
|
Record Minimum Monthly Precipitation
* mm
|
Averages | |
Average High Temperature
0.00 °C
|
Average Low Temperature
-11.10 °C
|
Average Mean Temp
-5.60 °C
|
Average Dew Point
-10.60 °C
|
Average Windspeed
16.70 km/h
|
Average Wind Direction
270.0
|
Average Morning Relative Humidity
72.0
|
Average Afternoon Relative Humidity
66.0
|
Typical Sky Cover
OVR
|
Average Precipitation (US Only)
1.52
|
Average Snowfall (US Only)
22.80
|
|
Daily Counts | |
Days With Precipitation
8
|
Days With Thunderstorms
*
|
Days With Fog
4
|
Days With Snow
8
|
Days With Lows Below Freezing
30
|
Days above 90° F (32.2° C)
0
|
Records | |
Record High
17.80 °C
|
Record Low
-38.90 °C
|
Record Wind Speed
92.60 km/h
|
Record Monthly Snowfall
58.4 cm
|
Record 24-hour Snowfall
25.40 cm
|
Record Monthly Rainfall
38 mm
|
Record 24-hour Rainfall
13 mm
|
Record Minimum Monthly Precipitation
* mm
|
Rise 7:14AM
Set 7:16PM
Last Quarter
Rise11:35PM
Set3:35PM
No Airport Delays Found
Day | Reason | Upper Soil Moisture | Lower Soil Moisture | |
Wednesday | Fire danger moderate | 19% | 24% | |
Thursday | Fire danger high | 19% | 24% | |
Friday | Fire danger extreme | 19% | 24% | |
Saturday | Fire danger extreme | 19% | 24% | |
Sunday | Fire danger extreme | 19% | 24% | |
Monday | Fire danger extreme | 19% | 24% |
Rise 7:14AM
Set 7:16PM
Last Quarter
Rise11:35PM
Set3:35PM
No Airport Delays Found
Rise 7:14AM
Set 7:16PM
Last Quarter
Rise11:35PM
Set3:35PM
No Airport Delays Found