September weather forecastEthridge, MT
September
Weather in September
September, the first month of the autumn in Ethridge, is still a refreshing month, with temperature in the range of an average low of 48.4°F (9.1°C) and an average high of 67.6°F (19.8°C).Temperature
September weather is marked by a drop in the average high-temperature, falling from a warm 78.1°F (25.6°C) in August to an enjoyable 67.6°F (19.8°C). Ethridge records an average low-temperature of 48.4°F (9.1°C) throughout the month of September.Humidity
In September, the average relative humidity is 49%.Rainfall
In Ethridge, in September, it is raining for 6.2 days, with typically 0.71" (18mm) of accumulated precipitation. Throughout the year, there are 70.4 rainfall days, and 8.46" (215mm) of precipitation is accumulated.Snowfall
Months with snowfall in Ethridge are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.8 snowfall days, it receives 0.51" (13mm) of snow. Throughout the year, there are 54.3 snowfall days, and 19.49" (495mm) of snow is accumulated.Daylight
In Ethridge, the average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 6:46 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 7:08 pm MDT.
Sunshine
In Ethridge, the average sunshine in September is 9.6h.UV index
The average daily maximum UV index in September in Ethridge is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ethridge, MT
- Average high temperature in September: 67.6°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (27.1°F).
- Average low temperature in September: 48.4°F
The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (15.3°F).
Average pressure in September
Ethridge, MT
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Ethridge, MT
- Average wind speed in September: 9.5mph
The windiest month (with the highest average wind speed) is January (11.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.8mph).
Average humidity in September
Ethridge, MT
- Average humidity in September: 49%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (43%).
Average rainfall in September
Ethridge, MT
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is June (1.77").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in September
Ethridge, MT
- Average rainfall days in September: 6.2 days
The month with the highest number of rainy days is May (10.4 days).
The month with the least rainy days is November (2.6 days).
Average snowfall in September
Ethridge, MT
- Average snowfall in September: 0.51"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Ethridge, MT
- Average snowfall days in September: 0.8 days
The month with the highest number of snowfall days is December (10.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Ethridge, MT
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).
Average sunshine days in September
Ethridge, MT
- Average sunshine days in September: 22.4 days
The month with the most sunshine days is July (23.5 days).
The month with the least sunshine days is April (17.4 days).
Average UV index in September
Ethridge, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Ethridge, MT
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in September
Ethridge, 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).
