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
The arrival of September corresponds with a temperature reduction, down from August's 84°F (28.9°C) to a still warm 74.3°F (23.5°C). Throughout September, an average nighttime temperature of 54°F (12.2°C) is experienced.Humidity
In September, the average relative humidity in Saint Xavier is 42%.Rainfall
In Saint Xavier, during September, the rain falls for 2.6 days and regularly aggregates up to 0.24" (6mm) of precipitation. In Saint Xavier, during the entire year, the rain falls for 46.3 days and collects up to 2.83" (72mm) of precipitation.Snowfall
June through September are months without snowfall in Saint Xavier.Daylight
In Saint Xavier, the average length of the day in September is 12h and 31min.On the first day of September in Saint Xavier, sunrise is at 6:33 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:52 pm MDT.
Sunshine
In Saint Xavier, the average sunshine in September is 10.7h.UV index
In Saint Xavier, Montana, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 4 in September leads to these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Saint Xavier?
What is the average humidity in September in Saint Xavier?
How much does it rain in Saint Xavier in September?
When it does not snow in Saint Xavier?
Does it snow in Saint Xavier in September?
What is the average length of the day in September in Saint Xavier?
When are sunrise and sunset in September in Saint Xavier?
How many hours of sunshine does Saint Xavier have in September?
How high is the UV index in September in Saint Xavier?
Average temperature in September
Saint Xavier, MT
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in September: 54°F
The months with the highest average low temperature are July and August (61.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average pressure in September
Saint Xavier, MT
- Average pressure in September: 29.94"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Saint Xavier, MT
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in September
Saint Xavier, MT
- Average humidity in September: 42%
The months with the highest relative humidity are January and February (76%).
The month with the lowest relative humidity is August (38%).
Average rainfall in September
Saint Xavier, MT
- Average rainfall in September: 0.24"
The wettest month (with the highest rainfall) is May (0.47").
The driest months (with the least rainfall) are January and December (0.12").
Average rainfall days in September
Saint Xavier, MT
- Average rainfall days in September: 2.6 days
The month with the highest number of rainy days is May (6.1 days).
The month with the least rainy days is December (2.2 days).
Average snowfall in September
Saint Xavier, MT
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Saint Xavier, MT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Saint Xavier, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 10h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in September
Saint Xavier, MT
- Average sunshine days in September: 26.8 days
The month with the most sunshine days is September (26.8 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in September
Saint Xavier, MT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Saint Xavier, MT
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 14).
Average visibility in September
Saint Xavier, MT
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Saint Xavier, Montana, USA
Weather forecast for your location
2. Allow the app to use your location