September weather forecastSaco, MT
September
Weather in September
September, the first month of the autumn in Saco, is still a pleasant month, with an average temperature varying between 53.2°F (11.8°C) and 71.1°F (21.7°C).Temperature
During the transition into September, Saco observes a decrease in the average high-temperature, falling from a warm 82.8°F (28.2°C) in August to a pleasant 71.1°F (21.7°C). Nighttime temperatures hover around an average low of 53.2°F (11.8°C) in September.Humidity
In Saco, the average relative humidity in September is 46%.Rainfall
In Saco, in September, during 8.1 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. In Saco, during the entire year, the rain falls for 91.8 days and collects up to 10.63" (270mm) of precipitation.Snowfall
In Saco, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 34min.On the first day of the month, sunrise is at 6:27 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:08 am and sunset at 6:49 pm MDT.
Sunshine
In Saco, the average sunshine in September is 9.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Saco, MT
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is February (24.4°F).
- Average low temperature in September: 53.2°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (10°F).
Average pressure in September
Saco, MT
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Saco, MT
- Average wind speed in September: 10mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is February (8.3mph).
Average humidity in September
Saco, MT
- Average humidity in September: 46%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (41%).
Average rainfall in September
Saco, MT
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days in September
Saco, MT
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Saco, MT
- Average snowfall in September: 0"
The month with the highest snowfall is December (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Saco, MT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Saco, MT
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Saco, MT
- Average sunshine days in September: 20.6 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is April (15.4 days).
Average UV index in September
Saco, 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, October, November and December (UV index 2).
Average cloud cover in September
Saco, MT
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in September
Saco, MT
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
