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 arrival of September corresponds with a temperature reduction, down from August's warm 82.8°F (28.2°C) to an agreeable 72.3°F (22.4°C). Throughout September, Culbertson witnesses a consistent average low-temperature of 54.3°F (12.4°C).Humidity
The average relative humidity in September in Culbertson is 48%.Rainfall
In Culbertson, in September, it is raining for 7.5 days, with typically 1.06" (27mm) of accumulated precipitation. In Culbertson, during the entire year, the rain falls for 85.7 days and collects up to 8.5" (216mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 34min.On the first day of September, sunrise is at 6:17 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:38 pm MDT.
Sunshine
In September, the average sunshine is 10h.UV index
The average daily maximum UV index in September in Culbertson is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 4 in September transforms into the following instructions:
Exercise prevention - Precautions against solar damage are endorsed. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. 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
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September in Culbertson?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Culbertson, MT
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in September
Culbertson, MT
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Culbertson, MT
- Average wind speed in September: 10.3mph
The windiest months (with the highest average wind speed) are April and October (11.1mph).
The calmest month (with the lowest average wind speed) is February (9.2mph).
Average humidity in September
Culbertson, MT
- Average humidity in September: 48%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (45%).
Average rainfall in September
Culbertson, MT
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in September
Culbertson, MT
- Average rainfall days in September: 7.5 days
The month with the highest number of rainy days is June (11.4 days).
The months with the least rainy days are January and February (3.2 days).
Average snowfall in September
Culbertson, MT
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.77").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Culbertson, MT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Culbertson, MT
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Culbertson, MT
- Average sunshine days in September: 20.7 days
The month with the most sunshine days is September (20.7 days).
The month with the least sunshine days is April (15.8 days).
Average UV index in September
Culbertson, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Culbertson, MT
- Average cloud cover in September: 24
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 18).
Average visibility in September
Culbertson, 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).
Culbertson, Montana, USA
Weather forecast for your location
2. Allow the app to use your location