September weather forecastArminto, WY
September
Weather in September
September, the first month of the autumn in Arminto, is still a warm month, with an average temperature ranging between min 52.3°F (11.3°C) and max 73.4°F (23°C).Temperature
As August shifts into September, a slight alteration in temperatures is observed, with average highs reducing from a moderately hot 82.6°F (28.1°C) to a still warm 73.4°F (23°C). Throughout September, the temperature in Arminto, Wyoming, falls to an average low of 52.3°F (11.3°C).Humidity
In September, the average relative humidity in Arminto, Wyoming, is 38%.Rainfall
In Arminto, during September, the rain falls for 6.6 days and regularly aggregates up to 0.39" (10mm) of precipitation. In Arminto, during the entire year, the rain falls for 81 days and collects up to 8.98" (228mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Arminto, Wyoming. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Arminto, there are 62.6 snowfall days, and 31.65" (804mm) of snow is accumulated.Daylight
In September, the average length of the day in Arminto is 12h and 29min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:06 am and sunset at 6:51 pm MDT.
Sunshine
The average sunshine in September in Arminto is 11h.UV index
In September, the average daily maximum UV index in Arminto is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Arminto, WY
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is December (15.1°F).
Average pressure in September
Arminto, WY
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Arminto, WY
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (8.4mph).
Average humidity in September
Arminto, WY
- Average humidity in September: 38%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (36%).
Average rainfall in September
Arminto, WY
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days in September
Arminto, WY
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is May (10.9 days).
The month with the least rainy days is December (3.3 days).
Average snowfall in September
Arminto, WY
- Average snowfall in September: 0.08"
The month with the highest snowfall is March (5.55").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Arminto, WY
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Arminto, WY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 11h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in September
Arminto, WY
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is April (13.6 days).
Average UV index in September
Arminto, WY
- Average UV index in September: 4
The months with the highest UV index are June, July and August (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
Arminto, WY
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Arminto, WY
- 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).
