September weather forecastLeiterville, MT
September
Weather in September
September, the first month of the autumn in Leiterville, is still a refreshing month, with an average temperature ranging between min 41.2°F (5.1°C) and max 67.6°F (19.8°C).Temperature
As September begins, there is a decrease in the average high-temperature, falling from a moderately hot 78.3°F (25.7°C) in August to an enjoyable 67.6°F (19.8°C). During September, Leiterville notes a substantial drop from the daytime peak to an average minimum temperature of 41.2°F (5.1°C).Humidity
In September, the average relative humidity is 52%.Rainfall
In September, the rain falls for 10.3 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. Throughout the year, there are 158 rainfall days, and 12.2" (310mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:50 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:26 am and sunset at 7:09 pm MDT.
Sunshine
In Leiterville, the average sunshine in September is 9.8h.UV index
In Leiterville, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 3 during September translates into the following directions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Leiterville, 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
Leiterville, 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
Leiterville, 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
Leiterville, 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
Leiterville, 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
Leiterville, 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
Leiterville, 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
Leiterville, 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
Leiterville, MT
- Average daylight in September: 12h and 30min
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 48min
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
Leiterville, 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
Leiterville, 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
Leiterville, 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
Leiterville, 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).
