September weather forecast and climate
Blaine, MN

Weather in September

September, the first month of the autumn, in Blaine, is still a pleasant month, with temperature in the range of an average low of 53.1°F (11.7°C) and an average high of 70.7°F (21.5°C).

Temperature

In Blaine, the average high-temperature marginally drops, from a moderately hot 78.6°F (25.9°C) in August, to an agreeable 70.7°F (21.5°C). In September, in Blaine, the average low-temperature is 53.1°F (11.7°C).

Humidity

The average relative humidity in September is 74%.

Rainfall

In September, in Blaine, Minnesota, the rain falls for 6.5 days. Throughout September, 0.31" (8mm) of precipitation is accumulated. In Blaine, during the entire year, the rain falls for 66.4 days and collects up to 4.84" (123mm) of precipitation.

Snowfall

In Blaine snow does not fall in June through September.

Daylight

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

Sunshine

In September, the average sunshine is 8.8h.

UV index

In Blaine, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in September in Blaine?

The average relative humidity in September in Blaine, Minnesota, is 74%.

How many days does it rain in September in Blaine?

In Blaine, in September, it is raining for 6.5 days, with typically 0.31" (8mm) of accumulated precipitation.

When it does not snow in Blaine?

In Blaine snow does not fall in June through September.

Does it snow in Blaine in September?

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

How many hours of daylight does Blaine have in September?

The average length of the day in September in Blaine, Minnesota, is 12.5h.

How many hours of sunshine does Blaine have in September?

In September, the average sunshine in Blaine, Minnesota, is 8.8h.

How high is the UV index in September in Blaine?

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Blaine, MN

Average temperature in September - Blaine, MN
  • Average high temperature in September: 70.7°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 (19.8°F).

  • Average low temperature in September: 53.1°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).

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Average pressure in September
Blaine, MN

Average pressure in September - Blaine, MN
  • Average pressure in September: 30"

The month with the highest atmospheric pressure is February (30.14").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in September
Blaine, MN

Average wind speed in September - Blaine, MN
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in September
Blaine, MN

Average humidity in September - Blaine, MN
  • Average humidity in September: 74%

The month with the highest relative humidity is January (91%).
Months with the lowest relative humidity are April and May (71%).

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Average rainfall in September
Blaine, MN

Average rainfall in September - Blaine, MN
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is June (0.79").
The driest month (with the least rainfall) is January (0.16").

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Average rainfall days in September
Blaine, MN

Average rainfall days in September - Blaine, MN
  • Average rainfall days in September: 6.5 days

The month with the highest number of rainy days is June (10.1 days).
The month with the least rainy days is February (1 days).

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Average snowfall in September
Blaine, MN

Average snowfall in September - Blaine, MN
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.18").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Blaine, MN

Average snowfall days in September - Blaine, MN
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Blaine, MN

Average daylight in September / Average sunshine in September - Blaine, MN
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in September: 8.8h

The month with the most sunshine is July (Average sunshine: 10.2h).
The month with the least sunshine is January (Average sunshine: 3.1h).

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Average sunshine days in September
Blaine, MN

Average sunshine days in September - Blaine, MN
  • Average sunshine days in September: 21.9 days

The month with the most sunshine days is December (25 days).
The month with the least sunshine days is June (16.2 days).

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Average UV index in September
Blaine, MN

Average UV index in September - Blaine, MN
  • 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, November and December (UV index 1).

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Average cloud cover in September
Blaine, MN

Average cloud cover in September - Blaine, MN
  • Average cloud cover in September: 34

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in September
Blaine, MN

Average visibility in September - Blaine, MN
  • Average visibility in September: 6mi

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).

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