September weather forecastGrand Meadow, MN
September
Weather in September
September marks the beginning of fall in Grand Meadow, Minnesota as the weather starts its transition from summer warmth to autumnal coolness. September is characterized by a sharp decline in temperature, with highs dropping down to 70.7°F (21.5°C). The precipitating foliage colors make for a beautiful backdrop all over the city. The humidity levels drop slightly, giving way to drier weather. The onsetting fall season brings forth vivid hues and a crispy feel to the air.Temperature
With the commencement of September, Grand Meadow records a moderate temperature decline, with the average high easing from August's warm 76.6°F (24.8°C) to an agreeable 70.7°F (21.5°C). In Grand Meadow, an average temperature of 52°F (11.1°C) is noted during September nights.Humidity
In Grand Meadow, the average relative humidity in September is 79%.Rainfall
In Grand Meadow, during September, the rain falls for 9.5 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Grand Meadow, Minnesota, during the entire year, the rain falls for 109.7 days and collects up to 16.57" (421mm) of precipitation.Snowfall
In Grand Meadow, snow does not fall in June through September.Daylight
In Grand Meadow, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:34 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:52 pm CDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In Grand Meadow, Minnesota, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. The Sun's radiation is especially intense around midday; try to stay in shade during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grand Meadow, MN
- Average high temperature in September: 70.7°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (20.7°F).
- Average low temperature in September: 52°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).
Average pressure in September
Grand Meadow, MN
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Grand Meadow, MN
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in September
Grand Meadow, MN
- Average humidity in September: 79%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Grand Meadow, MN
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Grand Meadow, MN
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is June (15.3 days).
The month with the least rainy days is February (2.3 days).
Average snowfall in September
Grand Meadow, MN
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Grand Meadow, MN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grand Meadow, MN
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Grand Meadow, MN
- Average sunshine days in September: 17.9 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in September
Grand Meadow, 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
Grand Meadow, MN
- Average cloud cover in September: 36
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Grand Meadow, MN
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
