Grand Forks
North Dakota, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Grand Forks, ND

The aerial view of the grand University of North Dakota located in Grand Forks, North Dakota, as well as its environs of green tree scene and many roads
The aerial view of the grand University of North Dakota located in Grand Forks, North Dakota, as well as its environs of green tree scene and many roads
The first month of the autumn, September, is still a pleasant month in Grand Forks, North Dakota, with temperature in the range of an average low of 44.2°F (6.8°C) and an average high of 69.6°F (20.9°C).

Temperature

In Grand Forks, the average high-temperature in September decreases, from a warm 80.2°F (26.8°C) in August, to an agreeable 69.6°F (20.9°C). In September, in Grand Forks, the average low-temperature is 44.2°F (6.8°C).

Rainfall

In Grand Forks, during September, the rain falls for 8.3 days and regularly aggregates up to 2.1" (52.1mm) of precipitation. In Grand Forks, during the entire year, the rain falls for 103.3 days and collects up to 20.8" (528.7mm) of precipitation.

Snowfall

In Grand Forks, in September, it doesn't snow. In October, it regularly snows. In Grand Forks, during the entire year, snow aggregates up to 47.8" (1214.1mm).

Daylight

The average length of the day in September in Grand Forks is 12.5h.

What is the temperature in September in Grand Forks?

In Grand Forks, North Dakota, in September, the average high-temperature is 69.6°F (20.9°C), and the average low-temperature is 44.2°F (6.8°C).

How many days does it rain in September in Grand Forks?

In Grand Forks, North Dakota, in September, during 8.3 rainfall days, 2.1" (52.1mm) of precipitation is typically accumulated.

Does it snow in Grand Forks in September?

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

What is the average length of the day in September in Grand Forks?

In Grand Forks, North Dakota, the average length of the day in September is 12.5h.
Average temperature in September - Grand Forks, ND
  • Average high temperature in September: 69.6°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (16.5°F).

  • Average low temperature in September: 44.2°F

The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is January (-3.1°F).

Average rainfall in September - Grand Forks, ND
  • Average rainfall in September: 2.1"

The wettest month (with the highest rainfall) is June (3.5").
The driest month (with the lowest rainfall) is February (0.5").

Average rainfall days in September - Grand Forks, ND
  • Average rainfall days in September: 8.3 days

The month with the highest number of rainy days is June (11.6 days).
The month with the lowest number of rainy days is February (6.6 days).

Average snowfall in September - Grand Forks, ND
  • Average snowfall in September: 0"

The month with the highest snowfall is January (11.2").
Months with the lowest snowfall are June, July, August and September (0").

Average snowfall days in September - Grand Forks, ND
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (10.6 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in September - Grand Forks, ND
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8.5h).