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
The average high-temperature decreases in September, shifting from a warm 75.7°F (24.3°C) in August to a comfortable 65.7°F (18.7°C). The nighttime temperature shows a significant divergence from the daytime highs, averaging at an icy 39.7°F (4.3°C) in September.Humidity
In Warren, the average relative humidity in September is 55%.Rainfall
In Warren, in September, during 7.7 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In Warren, during the entire year, the rain falls for 81 days and collects up to 32.68" (830mm) of precipitation.Snowfall
Months with snowfall are January through December. In Warren, in September, during 2.9 snowfall days, 2.32" (59mm) of snow is typically accumulated. In Warren, during the entire year, snow falls for 160 days and aggregates up to 210.63" (5350mm) of snow.Daylight
In Warren, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:05 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 6:24 pm PDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 3 suggests these recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
How many days does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Warren?
How high is the UV index in September?
Average temperature in September
Warren, ID
- Average high temperature in September: 65.7°F
The warmest months (with the highest average high temperature) are July and August (75.7°F).
The month with the lowest average high temperature is December (25.3°F).
- Average low temperature in September: 39.7°F
The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in September
Warren, ID
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Warren, ID
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is March (6mph).
The calmest months (with the lowest average wind speed) are May, June, August and September (5.3mph).
Average humidity in September
Warren, ID
- Average humidity in September: 55%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (48%).
Average rainfall in September
Warren, ID
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is February (4.49").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in September
Warren, ID
- Average rainfall days in September: 7.7 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (1.8 days).
Average snowfall in September
Warren, ID
- Average snowfall in September: 2.32"
The month with the highest snowfall is February (36.1").
The month with the least snowfall is August (0.08").
Average snowfall days in September
Warren, ID
- Average snowfall days in September: 2.9 days
The month with the highest number of snowfall days is March (24.9 days).
The month with the least snowfall days is August (0.3 days).
Average daylight in September /
Average sunshine in September
Warren, ID
- Average daylight in September: 12h and 3min
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: 8h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in September
Warren, ID
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is July (22.3 days).
The months with the least sunshine days are February and March (6.3 days).
Average UV index in September
Warren, ID
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 1).
Average cloud cover in September
Warren, ID
- Average cloud cover in September: 23
The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Warren, ID
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
Warren, Idaho, USA
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