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
In Wagner, entering September brings a temperature decrement, reducing from August's warm 82.2°F (27.9°C) to an agreeable 71.1°F (21.7°C). An average low-temperature of 53.4°F (11.9°C) is recorded in the month of September.Humidity
In September, the average relative humidity is 46%.Rainfall
In September, in Wagner, the rain falls for 8.7 days. Throughout September, 1.14" (29mm) of precipitation is accumulated. In Wagner, during the entire year, the rain falls for 103.3 days and collects up to 11.85" (301mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Wagner. Throughout September, in the average 0.2 snowfall days, it receives 0.2" (5mm) of snow. In Wagner, during the entire year, snow falls for 59.6 days and aggregates up to 20.28" (515mm) of snow.Daylight
In September, the average length of the day is 12h and 34min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:11 am and sunset at 6:52 pm MDT.
Sunshine
In Wagner, the average sunshine in September is 9.9h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
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 does it start to snow?
How many hours of daylight does Wagner have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Wagner, MT
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The months with the lowest average high temperature are January and February (25.7°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).
Average pressure in September
Wagner, MT
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Wagner, MT
- Average wind speed in September: 9.9mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).
Average humidity in September
Wagner, MT
- Average humidity in September: 46%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (41%).
Average rainfall in September
Wagner, MT
- Average rainfall in September: 1.14"
The wettest months (with the highest rainfall) are May and June (1.89").
The driest months (with the least rainfall) are February and December (0.55").
Average rainfall days in September
Wagner, MT
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is December (4 days).
Average snowfall in September
Wagner, MT
- Average snowfall in September: 0.2"
The month with the highest snowfall is December (3.9").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Wagner, MT
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (12.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Wagner, 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: 9h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Wagner, MT
- Average sunshine days in September: 19.8 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (13.4 days).
Average UV index in September
Wagner, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Wagner, MT
- Average cloud cover in September: 24
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in September
Wagner, MT
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Wagner, Montana, USA
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