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
September brings a minor decrease, with the average high-temperature reducing from a moderately hot 77.5°F (25.3°C) in August to an enjoyable 67.1°F (19.5°C). Toston, amidst the high September temperatures, experiences a substantial shift to an average nighttime low of 42.4°F (5.8°C).Humidity
In September, the average relative humidity in Toston is 54%.Rainfall
In Toston, Montana, in September, during 8.7 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In Toston, during the entire year, the rain falls for 103.1 days and collects up to 13.31" (338mm) of precipitation.Snowfall
Months with snowfall in Toston are January through June, September through December. September is the first month it typically snows in Toston. Throughout September, in the average 1.4 snowfall days, it receives 1.85" (47mm) of snow. Throughout the year, in Toston, there are 97.8 snowfall days, and 52.68" (1338mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 31min.On the first day of September in Toston, sunrise is at 6:47 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:06 pm MDT.
Sunshine
In September, the average sunshine in Toston, Montana, is 10.2h.UV index
In September, the average daily maximum UV index in Toston is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 3 during September leads to these advisories:
Take measures. Individuals with light skin might experience burns in under 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Toston?
What is the average humidity in September in Toston?
How much does it rain in Toston in September?
When does it start snowing in Toston?
What is the average length of the day in September in Toston?
When is the sunrise / sunset in September in Toston?
How long on average sun shines in September in Toston?
How high is the UV index in September in Toston?
Average temperature in September
Toston, MT
- Average high temperature in September: 67.1°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is December (25.3°F).
- Average low temperature in September: 42.4°F
The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (10.9°F).
Average pressure in September
Toston, MT
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Toston, MT
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Toston, MT
- Average humidity in September: 54%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (48%).
Average rainfall in September
Toston, MT
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Toston, MT
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is November (3.8 days).
Average snowfall in September
Toston, MT
- Average snowfall in September: 1.85"
The month with the highest snowfall is February (9.61").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Toston, MT
- Average snowfall days in September: 1.4 days
The month with the highest number of snowfall days is February (16.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Toston, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Toston, MT
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is April (10.6 days).
Average UV index in September
Toston, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Toston, MT
- Average cloud cover in September: 20
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in September
Toston, MT
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Toston, Montana, USA
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