September weather forecast
Warm Springs, MT

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Weather in September

The first month of the autumn, September, is still a refreshing month in Warm Springs, Montana, with an average temperature ranging between min 39.4°F (4.1°C) and max 63.7°F (17.6°C).

Temperature

Warm Springs experiences a temperature shift at the start of September, with average high-temperatures adjusting from a warm 73.9°F (23.3°C) in August to a comfortable 63.7°F (17.6°C). In Warm Springs, following the steep rise of daytime temperatures, an average nighttime low of 39.4°F (4.1°C) is anticipated during September.

Humidity

The average relative humidity in September is 56%.

Rainfall

In Warm Springs, in September, it is raining for 8.7 days, with typically 1.1" (28mm) of accumulated precipitation. Throughout the year, in Warm Springs, Montana, there are 128.3 rainfall days, and 16.57" (421mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. September is the first month it typically snows in Warm Springs. Throughout September, in the average 1 snowfall days, it receives 1.81" (46mm) of snow. Throughout the year, there are 110.5 snowfall days, and 59.8" (1519mm) of snow is accumulated.

Daylight

The average length of the day in September in Warm Springs is 12h and 31min.
On the first day of the month, sunrise is at 6:52 am and sunset at 8:09 pm. On the last day of September, in Warm Springs, sunrise is at 7:29 am and sunset at 7:12 pm MDT.

Sunshine

In September, the average sunshine is 9.5h.

UV index

In Warm Springs, Montana, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 3 translates into these guidelines:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

What are the temperatures in Warm Springs in September?

In Warm Springs, 63.7°F (17.6°C) is the average high-temperature and 39.4°F (4.1°C) is the average low-temperature during September.

What is the average humidity in September in Warm Springs?

The average relative humidity in September is 56%.

How much does it rain in Warm Springs in September?

In Warm Springs, in September, it is raining for 8.7 days, with typically 1.1" (28mm) of accumulated precipitation.

When does it start snowing in Warm Springs?

September is the first month it typically snows in Warm Springs, Montana. Throughout September, in the average 1 snowfall days, it receives 1.81" (46mm) of snow.

How many hours of daylight does Warm Springs have in September?

In September, the average day length in Warm Springs, Montana, is 12h and 31min.

What time are sunrise and sunset in September in Warm Springs?

In September, on the first day of the month, sunrise is at 6:52 am and sunset at 8:09 pm. On the last day of the month, in Warm Springs, sunrise is at 7:29 am and sunset at 7:12 pm MDT.

How long on average sun shines in September in Warm Springs?

In September, the average sunshine duration is 9.5h.

What is the UV index reading in September in Warm Springs?

The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Warm Springs, MT

Average temperature in September - Warm Springs, MT
  • Average high temperature in September: 63.7°F

The warmest month (with the highest average high temperature) is July (75.4°F).
The month with the lowest average high temperature is December (25.3°F).

  • Average low temperature in September: 39.4°F

The month with the highest average low temperature is July (45.3°F).
The coldest month (with the lowest average low temperature) is December (10.4°F).

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Average pressure in September
Warm Springs, MT

Average pressure in September - Warm Springs, MT
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in September
Warm Springs, MT

Average wind speed in September - Warm Springs, MT
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is January (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in September
Warm Springs, MT

Average humidity in September - Warm Springs, MT
  • Average humidity in September: 56%

The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are July and August (50%).

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Average rainfall in September
Warm Springs, MT

Average rainfall in September - Warm Springs, MT
  • Average rainfall in September: 1.1"

The wettest months (with the highest rainfall) are May and June (2.44").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days in September
Warm Springs, MT

Average rainfall days in September - Warm Springs, MT
  • Average rainfall days in September: 8.7 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (6.8 days).

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Average snowfall in September
Warm Springs, MT

Average snowfall in September - Warm Springs, MT
  • Average snowfall in September: 1.81"

The month with the highest snowfall is February (10.51").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
Warm Springs, MT

Average snowfall days in September - Warm Springs, MT
  • Average snowfall days in September: 1 days

The month with the highest number of snowfall days is February (19.6 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in September /
Average sunshine in September
Warm Springs, MT

Average daylight in September / Average sunshine in September - Warm Springs, MT
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

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Average sunshine days in September
Warm Springs, MT

Average sunshine days in September - Warm Springs, MT
  • Average sunshine days in September: 17.5 days

The month with the most sunshine days is August (17.8 days).
The month with the least sunshine days is April (8 days).

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Average UV index in September
Warm Springs, MT

Average UV index in September - Warm Springs, MT
  • Average UV index in September: 3

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).

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Average cloud cover in September
Warm Springs, MT

Average cloud cover in September - Warm Springs, MT
  • Average cloud cover in September: 22

The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in September
Warm Springs, MT

Average visibility in September - Warm Springs, MT
  • Average visibility in September: 6mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).

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Warm Springs, Montana, USA

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