September weather forecastLame Deer, MT
September
Weather in September
The first month of the autumn, September, is still a warm month in Lame Deer, Montana, with temperature in the range of an average low of 53.2°F (11.8°C) and an average high of 73.8°F (23.2°C).Temperature
Lame Deer's September weather shows a moderate shift in high-temperatures, falling from August's 83.3°F (28.5°C) to a still moderately hot 73.8°F (23.2°C). The temperature in Lame Deer lowers to an average of 53.2°F (11.8°C) during September nights.Humidity
In September, the average relative humidity in Lame Deer is 45%.Rainfall
In September, in Lame Deer, the rain falls for 10.3 days. Throughout September, 1.38" (35mm) of precipitation is accumulated. In Lame Deer, during the entire year, the rain falls for 113.9 days and collects up to 14.84" (377mm) of precipitation.Snowfall
January through June, September through December are months with snowfall in Lame Deer, Montana. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.16" (4mm) of snow. Throughout the year, in Lame Deer, there are 55.2 snowfall days, and 23.5" (597mm) of snow is accumulated.Daylight
The average length of the day in September in Lame Deer is 12h and 31min.On the first day of September, sunrise is at 6:28 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:48 pm MDT.
Sunshine
The average sunshine in September is 10.4h.UV index
In September, the average daily maximum UV index in Lame Deer is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Experience reduced UV exposure by about half when donning a wide-brim hat. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lame Deer, MT
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (30.4°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in September
Lame Deer, MT
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Lame Deer, MT
- Average wind speed in September: 8.4mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).
Average humidity in September
Lame Deer, MT
- Average humidity in September: 45%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (42%).
Average rainfall in September
Lame Deer, MT
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is December (0.47").
Average rainfall days in September
Lame Deer, MT
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Lame Deer, MT
- Average snowfall in September: 0.16"
The month with the highest snowfall is February (4.33").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Lame Deer, MT
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Lame Deer, 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 24min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in September
Lame Deer, MT
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Lame Deer, 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, February, March, April, November and December (UV index 2).
Average cloud cover in September
Lame Deer, MT
- Average cloud cover in September: 21
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Lame Deer, 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).
