September weather forecastNorth Fork, ID
September
Weather in September
September, the first month of the autumn in North Fork, is also an enjoyable month, with an average temperature varying between 66.2°F (19°C) and 39.4°F (4.1°C).Temperature
Transition from August to September is accompanied by a temperature drop, with average high-temperatures decreasing from a moderately hot 75.9°F (24.4°C) to a comfortable 66.2°F (19°C). In North Fork, following the steep rise of daytime temperatures, an average nighttime low of 39.4°F (4.1°C) is anticipated during September.Humidity
In North Fork, the average relative humidity in September is 55%.Rainfall
In North Fork, Idaho, during September, the rain falls for 7.4 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, there are 93.6 rainfall days, and 15.43" (392mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall. In September, it is snowing for 2.2 days. Throughout September, 1.42" (36mm) of snow is accumulated. In North Fork, during the entire year, snow falls for 129.3 days and aggregates up to 94.92" (2411mm) of snow.Daylight
In North Fork, Idaho, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:58 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:17 pm MDT.
Sunshine
In September, the average sunshine is 9.6h.UV index
In September, the average daily maximum UV index in North Fork is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 3 in September translates into these instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
North Fork, ID
- Average high temperature in September: 66.2°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is December (24.1°F).
- Average low temperature in September: 39.4°F
The month with the highest average low temperature is August (45.3°F).
The coldest month (with the lowest average low temperature) is December (9.5°F).
Average pressure in September
North Fork, ID
- Average pressure in September: 29.99"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
North Fork, ID
- Average wind speed in September: 4.3mph
The windiest month (with the highest average wind speed) is November (5.2mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
North Fork, ID
- Average humidity in September: 55%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (48%).
Average rainfall in September
North Fork, ID
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is April (1.81").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in September
North Fork, ID
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is June (11.7 days).
The months with the least rainy days are January, August and December (5.2 days).
Average snowfall in September
North Fork, ID
- Average snowfall in September: 1.42"
The month with the highest snowfall is February (14.8").
The month with the least snowfall is July (0.12").
Average snowfall days in September
North Fork, ID
- Average snowfall days in September: 2.2 days
The month with the highest number of snowfall days is March (20.3 days).
The month with the least snowfall days is July (0.2 days).
Average daylight in September /
Average sunshine in September
North Fork, ID
- 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: 9h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).
Average sunshine days in September
North Fork, ID
- Average sunshine days in September: 19.5 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is March (8.8 days).
Average UV index in September
North Fork, 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 and December (UV index 1).
Average cloud cover in September
North Fork, ID
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in September
North Fork, ID
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
