Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Start of September brings a shift in the average high-temperature, falling from August's agreeable 73°F (22.8°C) to a comfortable 63.1°F (17.3°C). September nights show a substantial disparity from the daytime peak with an average low-temperature of 39.2°F (4°C).Humidity
In Philipsburg, the average relative humidity in September is 57%.Rainfall
In Philipsburg, during September, the rain falls for 8.3 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, there are 100.3 rainfall days, and 19.06" (484mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through December. In Philipsburg, in September, during 3 snowfall days, 2.95" (75mm) of snow is typically accumulated. Throughout the year, there are 138.9 snowfall days, and 101.3" (2573mm) of snow is accumulated.Daylight
In September, the average length of the day in Philipsburg is 12h and 32min.On the first day of the month, sunrise is at 6:54 am and sunset at 8:11 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:14 pm MDT.
Sunshine
In September, the average sunshine is 9.4h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
How many days does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Philipsburg, MT
- Average high temperature in September: 63.1°F
The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is December (23.9°F).
- Average low temperature in September: 39.2°F
The months with the highest average low temperature are July and August (45.1°F).
The coldest month (with the lowest average low temperature) is December (11.3°F).
Average pressure in September
Philipsburg, 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).
Average wind speed in September
Philipsburg, MT
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is January (6.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Philipsburg, MT
- Average humidity in September: 57%
The month with the highest relative humidity is February (90%).
The months with the lowest relative humidity are July and August (51%).
Average rainfall in September
Philipsburg, MT
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is August (0.87").
Average rainfall days in September
Philipsburg, MT
- Average rainfall days in September: 8.3 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Philipsburg, MT
- Average snowfall in September: 2.95"
The month with the highest snowfall is February (15.12").
The months with the least snowfall are July and August (0.04").
Average snowfall days in September
Philipsburg, MT
- Average snowfall days in September: 3 days
The month with the highest number of snowfall days is March (21.5 days).
The month with the least snowfall days is July (0.1 days).
Average daylight in September /
Average sunshine in September
Philipsburg, 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 2min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 4h and 42min).
Average sunshine days in September
Philipsburg, MT
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is August (19.8 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in September
Philipsburg, 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 January, February, March and December (UV index 1).
Average cloud cover in September
Philipsburg, MT
- Average cloud cover in September: 24
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in September
Philipsburg, MT
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Philipsburg, Montana, USA
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