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
In September, the meteorological conditions change slightly, with the average high-temperature moving from a moderately hot 78.8°F (26°C) in August to a pleasant 72.5°F (22.5°C). An average low-temperature of 52.9°F (11.6°C) is observed during the September nights.Humidity
The average relative humidity in September is 73%.Rainfall
In September, the rain falls for 9.4 days. Throughout September, 1.26" (32mm) of precipitation is accumulated. Throughout the year, there are 99.2 rainfall days, and 12.13" (308mm) of precipitation is accumulated.Snowfall
In Fairfax, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 30min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:00 pm CDT.
Sunshine
The average sunshine in September in Fairfax is 9.1h.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: During September, 4 as the daily maximum UV index converts into the following advice:
Put precautions into practice - Guidance to elude sunburn is provided. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Fairfax?
What is the average humidity in September in Fairfax?
How many days does it rain in September in Fairfax?
When it does not snow in Fairfax?
Does it snow in Fairfax in September?
How many hours of daylight does Fairfax have in September?
What time are sunrise and sunset in September in Fairfax?
How long on average sun shines in September in Fairfax?
How high is the UV index in September in Fairfax?
Average temperature in September
Fairfax, MN
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (7°F).
Average pressure in September
Fairfax, MN
- Average pressure in September: 30"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Fairfax, MN
- Average wind speed in September: 8.5mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).
Average humidity in September
Fairfax, MN
- Average humidity in September: 73%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are May and October (68%).
Average rainfall in September
Fairfax, MN
- Average rainfall in September: 1.26"
The wettest month (with the highest rainfall) is June (2.01").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Fairfax, MN
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is June (14.5 days).
The month with the least rainy days is February (1.5 days).
Average snowfall in September
Fairfax, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.03").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Fairfax, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Fairfax, MN
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 9h and 1min
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 42min).
Average sunshine days in September
Fairfax, MN
- Average sunshine days in September: 19 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in September
Fairfax, MN
- 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, February and November (UV index 1).
Average cloud cover in September
Fairfax, MN
- Average cloud cover in September: 31
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 31).
Average visibility in September
Fairfax, MN
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Fairfax, Minnesota, USA
Weather forecast for your location
2. Allow the app to use your location