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 move into September indicates a slight reduction in the average high-temperature, down from August's warm 77.2°F (25.1°C) to a pleasant 70°F (21.1°C). Isanti reports an average low-temperature of 51.4°F (10.8°C) during the nights of September.Humidity
In September, the average relative humidity is 76%.Rainfall
In Isanti, during September, the rain falls for 10.8 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Isanti, during the entire year, the rain falls for 116.6 days and collects up to 20.67" (525mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Isanti, the average length of the day in September is 12h and 31min.On the first day of September, sunrise is at 6:35 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:54 pm CDT.
Sunshine
In September, the average sunshine is 8.7h.UV index
In Isanti, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in Isanti in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Isanti, MN
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (18.9°F).
- Average low temperature in September: 51.4°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure in September
Isanti, MN
- Average pressure in September: 29.99"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Isanti, MN
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity in September
Isanti, MN
- Average humidity in September: 76%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (71%).
Average rainfall in September
Isanti, MN
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is June (3.54").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Isanti, MN
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is February (1.9 days).
Average snowfall in September
Isanti, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Isanti, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Isanti, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Isanti, MN
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is January (18.2 days).
The month with the least sunshine days is June (11.8 days).
Average UV index in September
Isanti, MN
- 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, November and December (UV index 1).
Average cloud cover in September
Isanti, MN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Isanti, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Isanti, Minnesota, USA
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