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
September shows a mild decline in the average high-temperature, falling from August's moderately hot 84.7°F (29.3°C) to a still warm 74.3°F (23.5°C). Angela's nighttime temperature during September is consistently averaged at a mild 56.3°F (13.5°C).Humidity
The average relative humidity in September is 43%.Rainfall
In Angela, during September, the rain falls for 7.7 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, there are 101.7 rainfall days, and 11.85" (301mm) of precipitation is accumulated.Snowfall
In Angela, Montana, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:45 pm MDT.
Sunshine
In Angela, the average sunshine in September is 10.4h.UV index
In Angela, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 4 during September leads to these advisories:
Guard yourself - An obligation to protect skin and eyes from harm exists. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Consider this! The reflection from snow can almost 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 the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Angela have in September?
How high is the UV index in September?
Average temperature in September
Angela, MT
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in September
Angela, MT
- Average pressure in September: 29.92"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Angela, MT
- Average wind speed in September: 9.8mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is February (9.3mph).
Average humidity in September
Angela, MT
- Average humidity in September: 43%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (39%).
Average rainfall in September
Angela, MT
- Average rainfall in September: 1.06"
The wettest month (with the highest rainfall) is May (1.93").
The driest months (with the least rainfall) are November and December (0.55").
Average rainfall days in September
Angela, MT
- Average rainfall days in September: 7.7 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is December (4 days).
Average snowfall in September
Angela, MT
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Angela, MT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Angela, MT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in September
Angela, MT
- Average sunshine days in September: 20.2 days
The month with the most sunshine days is September (20.2 days).
The month with the least sunshine days is May (14.3 days).
Average UV index in September
Angela, 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).
Average cloud cover in September
Angela, MT
- Average cloud cover in September: 21
The months with the most cloud cover are February and December (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in September
Angela, 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).
Angela, Montana, USA
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