Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The average high-temperature drops in September, from August's warm 81°F (27.2°C) to an agreeable 70°F (21.1°C). Whitlash records an average low-temperature of 51.6°F (10.9°C) throughout the month of September.Humidity
The average relative humidity in September in Whitlash is 45%.Rainfall
In Whitlash, in September, it is raining for 6.6 days, with typically 0.63" (16mm) of accumulated precipitation. Throughout the year, in Whitlash, Montana, there are 77.5 rainfall days, and 6.5" (165mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Whitlash, Montana. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 0.55" (14mm) of snow. Throughout the year, in Whitlash, there are 38 snowfall days, and 8.78" (223mm) of snow is accumulated.Daylight
In September, the average length of the day in Whitlash is 12h and 34min.On the first day of September, sunrise is at 6:42 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:05 pm MDT.
Sunshine
In September, the average sunshine in Whitlash, Montana, is 9.9h.UV index
In September, the average daily maximum UV index in Whitlash is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 suggests this advice:
Be vigilant - Preventing sunburn is recommended. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
What is the usual temperature for Whitlash in September?
What is the average humidity in September in Whitlash?
How many days does it rain in September in Whitlash?
When does it start snowing in Whitlash?
How many hours of daylight does Whitlash have in September?
What time are sunrise and sunset in September in Whitlash?
How long on average sun shines in September in Whitlash?
What is the UV index intensity in September in Whitlash?
Average temperature in September
Whitlash, MT
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (27.9°F).
- Average low temperature in September: 51.6°F
The month with the highest average low temperature is August (60.3°F).
The coldest months (with the lowest average low temperature) are February and December (16.2°F).
Average pressure in September
Whitlash, MT
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Whitlash, MT
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Whitlash, MT
- Average humidity in September: 45%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).
Average rainfall in September
Whitlash, MT
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is June (1.54").
The driest months (with the least rainfall) are January and December (0.16").
Average rainfall days in September
Whitlash, MT
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is May (12.4 days).
The months with the least rainy days are January and February (2.1 days).
Average snowfall in September
Whitlash, MT
- Average snowfall in September: 0.55"
The month with the highest snowfall is April (1.65").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Whitlash, MT
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (6.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Whitlash, MT
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in September
Whitlash, MT
- Average sunshine days in September: 21.4 days
The months with the most sunshine days are January and December (23.9 days).
The months with the least sunshine days are May and June (16.3 days).
Average UV index in September
Whitlash, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Whitlash, MT
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in September
Whitlash, MT
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Whitlash, Montana, USA
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