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
A shift in Sheridan's weather is observed as August turns into September, with the average high temperature reducing from a warm 78.3°F (25.7°C) to a refreshing 67.6°F (19.8°C). Despite a significant daily temperature range, Sheridan's temperature falls to a steady low-temperature average of 41.2°F (5.1°C) in September.Humidity
In September, the average relative humidity is 52%.Rainfall
In Sheridan, during September, the rain falls for 10.3 days and regularly aggregates up to 0.98" (25mm) of precipitation. Throughout the year, there are 158 rainfall days, and 12.2" (310mm) of precipitation is accumulated.Snowfall
In Sheridan, snow does not fall in May through September.Daylight
In Sheridan, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:51 am and sunset at 8:05 pm. On the last day of September, in Sheridan, sunrise is at 7:26 am and sunset at 7:10 pm MDT.
Sunshine
In Sheridan, the average sunshine in September is 9.8h.UV index
In September, the average daily maximum UV index in Sheridan, Montana, is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Sheridan in September?
What is the average humidity in September in Sheridan?
How many days does it rain in September in Sheridan?
When it does not snow in Sheridan?
Does it snow in Sheridan in September?
How many hours of daylight does Sheridan have in September?
When is the sunrise / sunset in September in Sheridan?
How long on average sun shines in September in Sheridan?
How high is the UV index in September in Sheridan?
Average temperature in September
Sheridan, MT
- Average high temperature in September: 67.6°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 (26.4°F).
- Average low temperature in September: 41.2°F
The month with the highest average low temperature is July (47.7°F).
The coldest month (with the lowest average low temperature) is December (11.3°F).
Average pressure in September
Sheridan, MT
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Sheridan, MT
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is November (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Sheridan, MT
- Average humidity in September: 52%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).
Average rainfall in September
Sheridan, MT
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is May (1.85").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Sheridan, MT
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is April (18.6 days).
The month with the least rainy days is August (8.6 days).
Average snowfall in September
Sheridan, MT
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Sheridan, MT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sheridan, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in September
Sheridan, MT
- Average sunshine days in September: 16.4 days
The month with the most sunshine days is July (17.8 days).
The month with the least sunshine days is April (7.8 days).
Average UV index in September
Sheridan, 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, March, April, October, November and December (UV index 2).
Average cloud cover in September
Sheridan, MT
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 14).
Average visibility in September
Sheridan, MT
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Sheridan, Montana, USA
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