September weather forecast and climate
Glasgow, MT

Weather in September

The first month of the autumn, September, is also an agreeable month in Glasgow, Montana, with average temperature ranging between max 70.2°F (21.2°C) and min 53.8°F (12.1°C).

Temperature

In Glasgow, the average high-temperature in September decreases, from a moderately hot 81.7°F (27.6°C) in August, to an agreeable 70.2°F (21.2°C). In September, in Glasgow, the average low-temperature is 53.8°F (12.1°C).

Humidity

In September, the average relative humidity in Glasgow, Montana, is 47%.

Rainfall

In September, in Glasgow, Montana, the rain falls for 9.1 days. Throughout September, 1.1" (28mm) of precipitation is accumulated. Throughout the year, in Glasgow, there are 90.8 rainfall days, and 11.1" (282mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

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

Sunshine

The average sunshine in Glasgow is 10.1h.

UV index

In September, the average daily maximum UV index in Glasgow is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in September in Glasgow?

In September, in Glasgow, Montana, the average high-temperature is 70.2°F (21.2°C), and the average low-temperature is 53.8°F (12.1°C).

What is the average humidity in September in Glasgow?

In Glasgow, Montana, the average relative humidity in September is 47%.

How much does it rain in Glasgow in September?

In Glasgow, Montana, in September, it is raining for 9.1 days, with typically 1.1" (28mm) of accumulated precipitation.

Does it snow in Glasgow in September?

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

When it does not snow in Glasgow?

June through September are months without snowfall in Glasgow, Montana.

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

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

How many hours of sunshine does Glasgow have in September?

In September, the average sunshine is 10.1h.

What is the UV index reading in September in Glasgow?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.

Average temperature in September
Glasgow, MT

Average temperature in September - Glasgow, MT
  • Average high temperature in September: 70.2°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is February (23.7°F).

  • Average low temperature in September: 53.8°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (10.2°F).

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Average pressure in September
Glasgow, MT

Average pressure in September - Glasgow, MT
  • Average pressure in September: 29.92"

The month with the highest atmospheric pressure is February (30.15").
The month with the lowest atmospheric pressure is June (29.83").

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Average wind speed in September
Glasgow, MT

Average wind speed in September - Glasgow, MT
  • Average wind speed in September: 10.4mph

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).

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Average humidity in September
Glasgow, MT

Average humidity in September - Glasgow, MT
  • Average humidity in September: 47%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (42%).

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Average rainfall in September
Glasgow, MT

Average rainfall in September - Glasgow, MT
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and February (0.35").

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Average rainfall days in September
Glasgow, MT

Average rainfall days in September - Glasgow, MT
  • Average rainfall days in September: 9.1 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (2.3 days).

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Average snowfall in September
Glasgow, MT

Average snowfall in September - Glasgow, MT
  • Average snowfall in September: 0"

The month with the highest snowfall is December (2.6").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Glasgow, MT

Average snowfall days in September - Glasgow, MT
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (9.2 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in September /
Average sunshine in September
Glasgow, MT

Average daylight in September / Average sunshine in September - Glasgow, MT
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in September: 10.1h

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days in September
Glasgow, MT

Average sunshine days in September - Glasgow, MT
  • Average sunshine days in September: 18.9 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.8 days).

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Average UV index in September
Glasgow, MT

Average UV index in September - Glasgow, MT
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Glasgow, MT

Average cloud cover in September - Glasgow, MT
  • Average cloud cover in September: 23

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 16).

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Average visibility in September
Glasgow, MT

Average visibility in September - Glasgow, MT
  • Average visibility in September: 6mi

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

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