September weather forecastGrygla, MN
September
Weather in September
September, the first month of the autumn in Grygla, is also an agreeable month, with an average temperature fluctuating between 49.8°F (9.9°C) and 68.9°F (20.5°C).Temperature
The arrival of September corresponds with a temperature reduction, down from August's moderately hot 78.4°F (25.8°C) to an agreeable 68.9°F (20.5°C). An average low-temperature of 49.8°F (9.9°C) is noted during the month of September.Humidity
In Grygla, the average relative humidity in September is 67%.Rainfall
In September, the rain falls for 10.4 days. Throughout September, 1.69" (43mm) of precipitation is accumulated. In Grygla, during the entire year, the rain falls for 104.3 days and collects up to 18.39" (467mm) of precipitation.Snowfall
June through September are months without snowfall in Grygla.Daylight
In Grygla, the average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 6:41 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:02 pm CDT.
Sunshine
The average sunshine in September is 8.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 4 during September translates into these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grygla, MN
- Average high temperature in September: 68.9°F
The warmest months (with the highest average high temperature) are July and August (78.4°F).
The month with the lowest average high temperature is January (13.8°F).
- Average low temperature in September: 49.8°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (0°F).
Average pressure in September
Grygla, MN
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Grygla, MN
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is October (10.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity in September
Grygla, MN
- Average humidity in September: 67%
The months with the highest relative humidity are January and February (93%).
The months with the lowest relative humidity are May and August (66%).
Average rainfall in September
Grygla, MN
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is June (3.15").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days in September
Grygla, MN
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is January (1.9 days).
Average snowfall in September
Grygla, MN
- Average snowfall in September: 0"
The month with the highest snowfall is December (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Grygla, MN
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (16.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Grygla, MN
- 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: 8h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Grygla, MN
- Average sunshine days in September: 17.7 days
The month with the most sunshine days is August (18.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in September
Grygla, MN
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Grygla, MN
- Average cloud cover in September: 33
The months with the most cloud cover are January and February (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Grygla, MN
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
