September weather forecastNordman, ID
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Nordman, Idaho, with an average temperature varying between 40.8°F (4.9°C) and 66.7°F (19.3°C).Temperature
In the transition to September, Nordman observes a drop in the average high-temperature, moving from a moderately hot 77.5°F (25.3°C) in August to a refreshing 66.7°F (19.3°C). In Nordman, the September nights descend to a significantly cooler average of 40.8°F (4.9°C) compared to daytime highs.Humidity
In Nordman, Idaho, the average relative humidity in September is 64%.Rainfall
In Nordman, during September, the rain falls for 10.1 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Nordman, Idaho, during the entire year, the rain falls for 135.4 days and collects up to 23.03" (585mm) of precipitation.Snowfall
Months with snowfall in Nordman are January through May, September through December. September is the first month it typically snows in Nordman. Throughout September, in the average 0.3 snowfall days, it receives 0.63" (16mm) of snow. In Nordman, Idaho, during the entire year, snow falls for 81.3 days and aggregates up to 59.45" (1510mm) of snow.Daylight
The average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 6:06 am and sunset at 7:28 pm. On the last day of September, in Nordman, sunrise is at 6:47 am and sunset at 6:27 pm PDT.
Sunshine
In September, the average sunshine in Nordman is 9.5h.UV index
In Nordman, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Nordman, ID
- Average high temperature in September: 66.7°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (27.7°F).
- Average low temperature in September: 40.8°F
The month with the highest average low temperature is August (47.1°F).
The coldest months (with the lowest average low temperature) are February and December (16.7°F).
Average pressure in September
Nordman, ID
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Nordman, ID
- Average wind speed in September: 3.7mph
The windiest months (with the highest average wind speed) are April and May (4.2mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).
Average humidity in September
Nordman, ID
- Average humidity in September: 64%
The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (54%).
Average rainfall in September
Nordman, ID
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is December (2.83").
The driest month (with the least rainfall) is August (0.59").
Average rainfall days in September
Nordman, ID
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is April (17.7 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Nordman, ID
- Average snowfall in September: 0.63"
The month with the highest snowfall is January (14.76").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Nordman, ID
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (17.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Nordman, ID
- 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 30min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Nordman, ID
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is August (21 days).
The month with the least sunshine days is April (9 days).
Average UV index in September
Nordman, ID
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Nordman, ID
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Nordman, ID
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
