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
Onset of September witnesses a reduction in the average high-temperature, falling from a moderately hot 81.5°F (27.5°C) in August to an agreeable 71.4°F (21.9°C). During the nights in September, Hannover experiences a consistent average temperature of 51.6°F (10.9°C).Humidity
In September, the average relative humidity is 56%.Rainfall
In Hannover, in September, during 8.5 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Hannover, during the entire year, the rain falls for 102.8 days and collects up to 15.31" (389mm) of precipitation.Snowfall
In Hannover, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 7:06 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 7:26 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September 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 ordinary person.Note: In September, the maximum UV index of 4 suggests this advice:
Ensure safety - Recommendations to avert sunburn are presented. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hannover in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Hannover have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Hannover have in September?
How high is the UV index in September?
Average temperature in September
Hannover, ND
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in September: 51.6°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (6.8°F).
Average pressure in September
Hannover, ND
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Hannover, ND
- Average wind speed in September: 9.9mph
The windiest months (with the highest average wind speed) are April and October (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in September
Hannover, ND
- Average humidity in September: 56%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (54%).
Average rainfall in September
Hannover, ND
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in September
Hannover, ND
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in September
Hannover, ND
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Hannover, ND
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Hannover, ND
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Hannover, ND
- Average sunshine days in September: 20 days
The month with the most sunshine days is September (20 days).
The month with the least sunshine days is June (12.9 days).
Average UV index in September
Hannover, ND
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Hannover, ND
- Average cloud cover in September: 25
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Hannover, 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).
Hannover, North Dakota, USA
Weather forecast for your location
2. Allow the app to use your location