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
With September's onset, the weather shows a temperature decrease, transitioning from a warm 75.9°F (24.4°C) in August to a refreshing 66.2°F (19°C). Conner documents a significant temperature variance in September, with the mean nighttime lows settling at a wintry 39.4°F (4.1°C).Humidity
The average relative humidity in September is 55%.Rainfall
In Conner, during September, the rain falls for 7.4 days and regularly aggregates up to 0.71" (18mm) of precipitation. In Conner, during the entire year, the rain falls for 93.6 days and collects up to 15.43" (392mm) of precipitation.Snowfall
January through December are months with snowfall. In Conner, Montana, in September, snow falls for 2.2 days, with typically accumulated 1.42" (36mm) of snow. In Conner, during the entire year, snow falls for 129.3 days and aggregates up to 94.92" (2411mm) of snow.Daylight
The average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:58 am and sunset at 8:14 pm. On the last day of September, sunrise is at 7:34 am and sunset at 7:17 pm MDT.
Sunshine
In September, the average sunshine in Conner is 9.6h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 3 leads to the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. 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 usual temperature for Conner in September?
What is the average humidity in September in Conner?
How many days does it rain in September?
How much does it snow in September?
How many hours of daylight does Conner have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Conner, MT
- Average high temperature in September: 66.2°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is December (24.1°F).
- Average low temperature in September: 39.4°F
The month with the highest average low temperature is August (45.3°F).
The coldest month (with the lowest average low temperature) is December (9.5°F).
Average pressure in September
Conner, 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 (29.93"Hg).
Average wind speed in September
Conner, MT
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is November (5.2mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Conner, MT
- Average humidity in September: 55%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (48%).
Average rainfall in September
Conner, MT
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is April (1.81").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in September
Conner, MT
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is June (11.7 days).
The months with the least rainy days are January, August and December (5.2 days).
Average snowfall in September
Conner, MT
- Average snowfall in September: 1.42"
The month with the highest snowfall is February (14.8").
The month with the least snowfall is July (0.12").
Average snowfall days in September
Conner, MT
- Average snowfall days in September: 2.2 days
The month with the highest number of snowfall days is March (20.3 days).
The month with the least snowfall days is July (0.2 days).
Average daylight in September /
Average sunshine in September
Conner, 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: 9h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Conner, MT
- Average sunshine days in September: 19.5 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is March (8.8 days).
Average UV index in September
Conner, 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
Conner, MT
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
Conner, MT
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Conner, Montana, USA
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