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
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a moderately hot 77.5°F (25.3°C) in August to an agreeable 72.1°F (22.3°C). In September, Grand Junction records an average nighttime temperature of 56.3°F (13.5°C).Humidity
In Grand Junction, the average relative humidity in September is 78%.Rainfall
In Grand Junction, in September, it is raining for 14.3 days, with typically 2.28" (58mm) of accumulated precipitation. Throughout the year, in Grand Junction, there are 157.3 rainfall days, and 30.04" (763mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Grand Junction.Daylight
The average length of the day in September in Grand Junction is 12h and 28min.On the first day of the month, sunrise is at 7:10 am and sunset at 8:17 pm. On the last day of September, sunrise is at 7:41 am and sunset at 7:26 pm EDT.
Sunshine
The average sunshine in September in Grand Junction, Michigan, is 8.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 4 suggests this advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Frequently asked questions
What are September temperatures in Grand Junction?
What is the average humidity in September in Grand Junction?
How many days does it rain in September in Grand Junction?
When it does not snow in Grand Junction?
Does it snow in Grand Junction in September?
What is the average length of the day in September in Grand Junction?
When is the sunrise / sunset in September in Grand Junction?
How many hours of sunshine does Grand Junction have in September?
What is the UV index reading in September in Grand Junction?
Average temperature in September
Grand Junction, MI
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in September
Grand Junction, MI
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January, March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Grand Junction, MI
- Average wind speed in September: 8.1mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in September
Grand Junction, MI
- Average humidity in September: 78%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (76%).
Average rainfall in September
Grand Junction, MI
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is February (1.65").
Average rainfall days in September
Grand Junction, MI
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in September
Grand Junction, MI
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Grand Junction, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.5 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 Junction, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 2min
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 42min).
Average sunshine days in September
Grand Junction, MI
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is March (14.7 days).
The month with the least sunshine days is January (8.8 days).
Average UV index in September
Grand Junction, MI
- Average UV index in September: 4
The months with the highest UV index are June and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Grand Junction, MI
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in September
Grand Junction, MI
- 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).
Grand Junction, Michigan, USA
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