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
With the beginning of September, the average high-temperature shows a decrease, transitioning from a moderately hot 81.1°F (27.3°C) in August to an agreeable 71.1°F (21.7°C). During September, Hillsboro's temperature falls to a steady low-temperature average of 52.3°F (11.3°C).Humidity
The average relative humidity in September is 62%.Rainfall
In Hillsboro, in September, it is raining for 8.5 days, with typically 1.73" (44mm) of accumulated precipitation. Throughout the year, in Hillsboro, there are 103 rainfall days, and 18.35" (466mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Hillsboro.Daylight
The average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:48 am and sunset at 8:07 pm. On the last day of September, in Hillsboro, sunrise is at 7:26 am and sunset at 7:09 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In September, the average daily maximum UV index in Hillsboro is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Guard yourself - Avoiding sunburn is suggested. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Hillsboro?
What is the average humidity in September in Hillsboro?
How much does it rain in Hillsboro in September?
When it does not snow in Hillsboro?
Does it snow in Hillsboro in September?
What is the average length of the day in September in Hillsboro?
What time are sunrise and sunset in September in Hillsboro?
How many hours of sunshine does Hillsboro have in September?
How high is the UV index in September in Hillsboro?
Average temperature in September
Hillsboro, ND
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is January (15.6°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (1.6°F).
Average pressure in September
Hillsboro, ND
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Hillsboro, ND
- Average wind speed in September: 9.8mph
The windiest month (with the highest average wind speed) is October (10.7mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in September
Hillsboro, ND
- Average humidity in September: 62%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (61%).
Average rainfall in September
Hillsboro, ND
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is June (3.46").
The driest months (with the least rainfall) are January and February (0.59").
Average rainfall days in September
Hillsboro, ND
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (2.2 days).
Average snowfall in September
Hillsboro, ND
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hillsboro, ND
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (14.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Hillsboro, ND
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in September
Hillsboro, ND
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is September (20.1 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Hillsboro, ND
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in September
Hillsboro, ND
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Hillsboro, 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, February, March and December (5mi).
Hillsboro, North Dakota, USA
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