September weather forecast
Colfax, ND

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Weather in September

September, the first month of the autumn in Colfax, is still a pleasant month, with an average temperature fluctuating between 52.5°F (11.4°C) and 72°F (22.2°C).

Temperature

September signifies a gentle decline in Colfax's average high-temperature, easing from a moderately hot 80.6°F (27°C) in August to an agreeable 72°F (22.2°C). In Colfax, an average temperature of 52.5°F (11.4°C) is noted during September nights.

Humidity

The least humid month is September, with an average relative humidity of 64%.

Rainfall

In Colfax, in September, during 9.4 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, there are 105.1 rainfall days, and 18.23" (463mm) of precipitation is accumulated.

Snowfall

In Colfax, North Dakota, snow does not fall in June through September.

Daylight

In September, the average length of the day is 12h and 32min.
On the first day of the month, sunrise is at 6:48 am and sunset at 8:05 pm. On the last day of September, sunrise is at 7:25 am and sunset at 7:08 pm CDT.

Sunshine

In Colfax, the average sunshine in September is 8.9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

What is the usual temperature for Colfax in September?

In September, in Colfax, the average high-temperature is 72°F (22.2°C), and the average low-temperature is 52.5°F (11.4°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 84.2°F (29°C).

What is the least humid month?

The least humid month is September, with an average relative humidity of 64%.

What is the average humidity in September?

In Colfax, the average relative humidity in September is 64%.

How many days does it rain in September?

In Colfax, during September, the rain falls for 9.4 days and regularly aggregates up to 1.3" (33mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In Colfax, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

In September, the average day length in Colfax is 12h and 32min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:48 am and sunset at 8:05 pm. On the last day of the month, in Colfax, sunrise is at 7:25 am and sunset at 7:08 pm CDT.

How long on average sun shines in September?

In Colfax, the average sunshine duration in September is 8.9h.

How high is the UV index in September?

In Colfax, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Colfax, ND

Average temperature in September - Colfax, ND
  • Average high temperature in September: 72°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (17.4°F).

  • Average low temperature in September: 52.5°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (3.7°F).

Average pressure in September
Colfax, ND

Average pressure in September - Colfax, ND
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in September
Colfax, ND

Average wind speed in September - Colfax, ND
  • Average wind speed in September: 9.5mph

The windiest months (with the highest average wind speed) are April and October (10.6mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).

Average humidity in September
Colfax, ND

Average humidity in September - Colfax, ND
  • Average humidity in September: 64%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is September (64%).

Average rainfall in September
Colfax, ND

Average rainfall in September - Colfax, ND
  • Average rainfall in September: 1.3"

The wettest month (with the highest rainfall) is June (3.15").
The driest months (with the least rainfall) are January and February (0.59").

Average rainfall days in September
Colfax, ND

Average rainfall days in September - Colfax, ND
  • Average rainfall days in September: 9.4 days

The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is February (2 days).

Average snowfall in September
Colfax, ND

Average snowfall in September - Colfax, ND
  • Average snowfall in September: 0"

The month with the highest snowfall is December (4.17").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Colfax, ND

Average snowfall days in September - Colfax, ND
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Colfax, ND

Average daylight in September / Average sunshine in September - Colfax, 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 42min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

Average sunshine days in September
Colfax, ND

Average sunshine days in September - Colfax, ND
  • Average sunshine days in September: 19.3 days

The month with the most sunshine days is September (19.3 days).
The month with the least sunshine days is June (11.3 days).

Average UV index in September
Colfax, ND

Average UV index in September - Colfax, ND
  • 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, November and December (UV index 1).

Average cloud cover in September
Colfax, ND

Average cloud cover in September - Colfax, ND
  • Average cloud cover in September: 29

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 25).

Average visibility in September
Colfax, ND

Average visibility in September - Colfax, ND
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and March (5mi).

Colfax, North Dakota, USA

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