September weather forecast and climate
Northwood, ND

The first month of the autumn, September, is still a pleasant month in Northwood, North Dakota, with temperature in the range of an average high of 70°F (21.1°C) and an average low of 51.4°F (10.8°C).

Temperature

In September, the average high-temperature decreases, from a moderately hot 79.9°F (26.6°C) in August, to an agreeable 70°F (21.1°C). In September, in Northwood, the average low-temperature is 51.4°F (10.8°C).

Humidity

In September, the average relative humidity in Northwood is 62%.

Rainfall

In Northwood, in September, during 8.3 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Northwood, during the entire year, the rain falls for 91.5 days and collects up to 15.31" (389mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in Northwood is 12.5h.

Sunshine

In September, the average sunshine in Northwood is 8.7h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Northwood?

The average high-temperature, in September, in Northwood, North Dakota, is 70°F (21.1°C), while the average low-temperature is 51.4°F (10.8°C).

What is the average humidity in September in Northwood?

In Northwood, North Dakota, the average relative humidity in September is 62%.

How many days does it rain in September in Northwood?

In September, in Northwood, the rain falls for 8.3 days. Throughout September, 1.54" (39mm) of precipitation is accumulated.

Does it snow in Northwood in September?

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

When it does not snow in Northwood?

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

What is the average length of the day in September in Northwood?

In Northwood, the average length of the day in September is 12.5h.

How many hours of sunshine does Northwood have in September?

In Northwood, the average sunshine in September is 8.7h.

How high is the UV index in September in Northwood?

In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.
Average temperature in September - Northwood, ND
  • Average high temperature in September: 21.1°C

The warmest month (with the highest average high temperature) is August (26.6°C).
The month with the lowest average high temperature is January (-9.2°C).

  • Average low temperature in September: 10.8°C

The month with the highest average low temperature is July (15.7°C).
The coldest month (with the lowest average low temperature) is January (-17°C).

Average pressure in September - Northwood, ND
  • Average pressure in September: 1014.4mbar

The month with the highest atmospheric pressure is February (1021.7mbar).
The month with the lowest atmospheric pressure is June (1011mbar).

Average wind speed in September - Northwood, ND
  • Average wind speed in September: 16.2km/h

The windiest month (with the highest average wind speed) is October (17.7km/h).
The calmest months (with the lowest average wind speed) are July and August (13.6km/h).

Average humidity in September - Northwood, ND
  • Average humidity in September: 62%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (60%).

Average rainfall in September - Northwood, ND
  • Average rainfall in September: 39mm

The wettest month (with the highest rainfall) is June (76mm).
The driest month (with the least rainfall) is January (9mm).

Average rainfall days in September - Northwood, ND
  • Average rainfall days in September: 8.3 days

The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is February (1.2 days).

Average snowfall in September - Northwood, ND
  • Average snowfall in September: 0mm

The month with the highest snowfall is December (91mm).
Months with the least snowfall are June, July, August and September (0mm).

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

The month with the highest number of snowfall days is December (11.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Northwood, ND
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.9h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in September: 8.7h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is January (Average sunshine: 3.4h).

Average sunshine days in September - Northwood, ND
  • Average sunshine days in September: 20.3 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (10.8 days).

Average UV index in September - Northwood, ND
  • Average UV index in September: 4

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February and November (UV index 1).

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

Months with the most cloud cover are January and February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 24).

Average visibility in September - Northwood, ND
  • Average visibility in September: 10km

Months with the highest visibility are May, July, August and September (10km).
Months with the lowest visibility are January, February, March and December (8km).