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 arrival of September corresponds with a reduction in the average high-temperature, down from August's warm 81.5°F (27.5°C) to a pleasant 70.3°F (21.3°C). September's nights in Hartland observe an average temperature of 50.9°F (10.5°C).Humidity
In Hartland, North Dakota, the average relative humidity in September is 56%.Rainfall
In September, in Hartland, the rain falls for 10.3 days. Throughout September, 1.89" (48mm) of precipitation is accumulated. Throughout the year, there are 104.5 rainfall days, and 16.1" (409mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Hartland.Daylight
The average length of the day in September in Hartland is 12h and 34min.On the first day of September, sunrise is at 7:05 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 7:27 pm CDT.
Sunshine
In Hartland, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September in Hartland is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The UV index of 4 in September translates into these instructions:
Prioritize safety - Recommendations to avert sunburn are shared. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hartland in September?
What is the average humidity in September in Hartland?
How many days does it rain in September in Hartland?
When it does not snow in Hartland?
Does it snow in Hartland in September?
How many hours of daylight does Hartland have in September?
When is the sunrise / sunset in September in Hartland?
How many hours of sunshine does Hartland have in September?
What is the UV index intensity in September in Hartland?
Average temperature in September
Hartland, ND
- Average high temperature in September: 70.3°F
The warmest month (with the highest average high temperature) is August (81.5°F).
The month with the lowest average high temperature is January (18.1°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (4.3°F).
Average pressure in September
Hartland, ND
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is February (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Hartland, ND
- Average wind speed in September: 9.6mph
The windiest month (with the highest average wind speed) is October (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Hartland, ND
- Average humidity in September: 56%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (54%).
Average rainfall in September
Hartland, ND
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is June (2.83").
The driest months (with the least rainfall) are January and February (0.51").
Average rainfall days in September
Hartland, ND
- Average rainfall days in September: 10.3 days
The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is February (2 days).
Average snowfall in September
Hartland, ND
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hartland, ND
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hartland, ND
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 0min).
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 18min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Hartland, ND
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is June (10.7 days).
Average UV index in September
Hartland, 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 and November (UV index 1).
Average cloud cover in September
Hartland, ND
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Hartland, 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).
Hartland, North Dakota, USA
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