September weather forecastWhite City, MT
September
Weather in September
September, the first month of the autumn in White City, is also an enjoyable month, with an average temperature varying between 40.8°F (4.9°C) and 64.8°F (18.2°C).Temperature
White City, Montana, experiences a temperature shift at the start of September, with average high-temperatures adjusting from a moderately hot 75.2°F (24°C) in August to an enjoyable 64.8°F (18.2°C). Despite a significant daily temperature range, White City's temperature falls to a steady low-temperature average of 40.8°F (4.9°C) in September.Humidity
The average relative humidity in September is 55%.Rainfall
In September, in White City, the rain falls for 9.9 days. Throughout September, 1.1" (28mm) of precipitation is accumulated. In White City, during the entire year, the rain falls for 139 days and collects up to 15.63" (397mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.7 snowfall days, it receives 0.55" (14mm) of snow. In White City, during the entire year, snow falls for 89.9 days and aggregates up to 47.2" (1199mm) of snow.Daylight
In White City, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:59 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:04 pm MDT.
Sunshine
In White City, Montana, the average sunshine in September is 10h.UV index
In White City, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 3 in September translates into these instructions:
Undertake precautions - Guarding against sun damage is counselled. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Keep in mind! Snow's reflective quality 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
Average temperature in September
White City, MT
- Average high temperature in September: 64.8°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (25°F).
- Average low temperature in September: 40.8°F
The month with the highest average low temperature is August (47.3°F).
The coldest month (with the lowest average low temperature) is December (11.1°F).
Average pressure in September
White City, MT
- Average pressure in September: 29.98"Hg
The months with the highest atmospheric pressure are January and December (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
White City, MT
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in September
White City, MT
- Average humidity in September: 55%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is August (50%).
Average rainfall in September
White City, MT
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is May (2.24").
The driest months (with the least rainfall) are January and December (0.71").
Average rainfall days in September
White City, MT
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in September
White City, MT
- Average snowfall in September: 0.55"
The month with the highest snowfall is April (8.11").
The months with the least snowfall are July and August (0").
Average snowfall days in September
White City, MT
- Average snowfall days in September: 0.7 days
The month with the highest number of snowfall days is February (16.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
White City, 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: 10h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in September
White City, MT
- Average sunshine days in September: 17 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is May (6.4 days).
Average UV index in September
White City, MT
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
White City, MT
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in September
White City, 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 and February (4mi).
