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
The move into September indicates a slight reduction in the average high-temperature, down from August's pleasant 68.7°F (20.4°C) to an enjoyable 62.8°F (17.1°C). Grant anticipates a pronounced temperature drop from daily highs during the nights of September, with an average low of 37.9°F (3.3°C).Humidity
In September, the average relative humidity is 54%.Rainfall
In Grant, Colorado, in September, during 13 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Grant, during the entire year, the rain falls for 138.3 days and collects up to 23.07" (586mm) of precipitation.Snowfall
Months with snowfall are January through December. In Grant, in September, during 3.5 snowfall days, 1.26" (32mm) of snow is typically accumulated. Throughout the year, in Grant, there are 127.6 snowfall days, and 93.94" (2386mm) of snow is accumulated.Daylight
In Grant, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:33 pm. On the last day of September, sunrise is at 6:58 am and sunset at 6:46 pm MDT.
Sunshine
The average sunshine in September in Grant is 11h.UV index
The average daily maximum UV index in September in Grant is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Opt for tightly woven and loose clothing to enhance protection from the Sun. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
What is the usual temperature for Grant in September?
What is the average humidity in September in Grant?
How much does it rain in Grant in September?
How much does it snow in Grant in September?
What is the average length of the day in September in Grant?
When is the sunrise / sunset in September in Grant?
How many hours of sunshine does Grant have in September?
What is the UV index reading in September in Grant?
Average temperature in September
Grant, CO
- Average high temperature in September: 62.8°F
The warmest month (with the highest average high temperature) is July (70°F).
The month with the lowest average high temperature is December (26.8°F).
- Average low temperature in September: 37.9°F
The month with the highest average low temperature is July (44.2°F).
The coldest months (with the lowest average low temperature) are January and December (8.1°F).
Average pressure in September
Grant, CO
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and May (29.93"Hg).
Average wind speed in September
Grant, CO
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in September
Grant, CO
- Average humidity in September: 54%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is June (51%).
Average rainfall in September
Grant, CO
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is May (3.7").
The driest month (with the least rainfall) is December (0.79").
Average rainfall days in September
Grant, CO
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is July (23.9 days).
The month with the least rainy days is November (3.4 days).
Average snowfall in September
Grant, CO
- Average snowfall in September: 1.26"
The month with the highest snowfall is May (17.48").
The month with the least snowfall is July (0.12").
Average snowfall days in September
Grant, CO
- Average snowfall days in September: 3.5 days
The month with the highest number of snowfall days is April (18.5 days).
The months with the least snowfall days are July and August (0.5 days).
Average daylight in September /
Average sunshine in September
Grant, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 11h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).
Average sunshine days in September
Grant, CO
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (4.1 days).
Average UV index in September
Grant, CO
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Grant, CO
- Average cloud cover in September: 18
The month with the most cloud cover is February (Cloud cover 38).
The months with the least cloud cover are June and September (Cloud cover 18).
Average visibility in September
Grant, CO
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Grant, Colorado, USA
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