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 onset of September entails a temperature shift, as the average high-temperature decreases from a moderately hot 79°F (26.1°C) in August to an agreeable 68.4°F (20.2°C). Willow City witnesses a consistent average low-temperature of 48.9°F (9.4°C) throughout September.Humidity
In Willow City, the average relative humidity in September is 60%.Rainfall
In Willow City, in September, it is raining for 10 days, with typically 1.93" (49mm) of accumulated precipitation. In Willow City, during the entire year, the rain falls for 106.7 days and collects up to 17.05" (433mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 6:59 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 7:21 pm CDT.
Sunshine
In Willow City, the average sunshine in September is 8.5h.UV index
In Willow City, North Dakota, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Frequently asked questions
What are September temperatures in Willow City?
What is the average humidity in September in Willow City?
How many days does it rain in September in Willow City?
When it does not snow in Willow City?
Does it snow in Willow City in September?
How many hours of daylight does Willow City have in September?
When are sunrise and sunset in September in Willow City?
How long on average sun shines in September in Willow City?
How high is the UV index in September in Willow City?
Average temperature in September
Willow City, ND
- Average high temperature in September: 68.4°F
The warmest month (with the highest average high temperature) is August (79°F).
The month with the lowest average high temperature is January (14.7°F).
- Average low temperature in September: 48.9°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (0.1°F).
Average pressure in September
Willow City, ND
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is February (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Willow City, ND
- Average wind speed in September: 9.5mph
The windiest month (with the highest average wind speed) is October (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in September
Willow City, ND
- Average humidity in September: 60%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (58%).
Average rainfall in September
Willow City, ND
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is June (3.19").
The driest months (with the least rainfall) are January and February (0.55").
Average rainfall days in September
Willow City, ND
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is February (2.1 days).
Average snowfall in September
Willow City, ND
- Average snowfall in September: 0"
The month with the highest snowfall is November (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Willow City, ND
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (16.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Willow City, ND
- Average daylight in September: 12h and 4min
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: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Willow City, ND
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is August (19 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in September
Willow City, ND
- 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 and December (UV index 1).
Average cloud cover in September
Willow City, ND
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Willow City, ND
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Willow City, North Dakota, USA
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