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
As September arrives, McHenry's weather displays a decrease in high-temperatures, transitioning from August's warm 80.1°F (26.7°C) to an agreeable 70.3°F (21.3°C). An average temperature of 50.9°F (10.5°C) marks the nights in September.Humidity
In McHenry, the average relative humidity in September is 61%.Rainfall
In September, the rain falls for 7.8 days. Throughout September, 1.22" (31mm) of precipitation is accumulated. In McHenry, during the entire year, the rain falls for 87.8 days and collects up to 15.83" (402mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:54 am and sunset at 8:14 pm. On the last day of September, sunrise is at 7:33 am and sunset at 7:15 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does McHenry have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does McHenry have in September?
How high is the UV index in September?
Average temperature in September
McHenry, ND
- Average high temperature in September: 70.3°F
The warmest months (with the highest average high temperature) are July and August (80.1°F).
The month with the lowest average high temperature is January (16.9°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (2.7°F).
Average pressure in September
McHenry, ND
- Average pressure in September: 29.96"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
McHenry, ND
- Average wind speed in September: 10.1mph
The windiest month (with the highest average wind speed) is October (11.4mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
McHenry, ND
- Average humidity in September: 61%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (60%).
Average rainfall in September
McHenry, ND
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in September
McHenry, ND
- Average rainfall days in September: 7.8 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (1.1 days).
Average snowfall in September
McHenry, ND
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
McHenry, ND
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (13.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
McHenry, 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 54min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
McHenry, ND
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is September (21.5 days).
The month with the least sunshine days is June (13 days).
Average UV index in September
McHenry, 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
McHenry, ND
- Average cloud cover in September: 28
The months with the most cloud cover are January and February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
McHenry, 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).
McHenry, North Dakota, USA
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