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 onset of September results in a small decrease in the average high-temperature, moderately receding from 85.5°F (29.7°C) in August to a still moderately hot 77.9°F (25.5°C). Despite the significant gap from daytime peaks, Crook experiences an average low-temperature of 56.1°F (13.4°C) in September.Humidity
With an average relative humidity of 48%, September is the least humid month.Rainfall
In Crook, during September, the rain falls for 9.5 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, there are 105.9 rainfall days, and 15.94" (405mm) of precipitation is accumulated.Snowfall
In Crook, snow does not fall in June through September.Daylight
In September, the average length of the day in Crook is 12h and 27min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:23 pm. On the last day of September, in Crook, sunrise is at 6:47 am and sunset at 6:34 pm MDT.
Sunshine
In Crook, the average sunshine in September is 10.2h.UV index
In September, the average daily maximum UV index in Crook is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a daily UV index of 5 turns into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. To cut down UV radiation exposure by about half, sport a wide-brim hat. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Crook in September?
What is the least humid month in Crook?
What is the average humidity in September in Crook?
How much does it rain in Crook in September?
When it does not snow in Crook?
Does it snow in Crook in September?
What is the average length of the day in September in Crook?
When are sunrise and sunset in September in Crook?
How long on average sun shines in September in Crook?
What is the UV index reading in September in Crook?
Average temperature in September
Crook, CO
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is December (37.4°F).
- Average low temperature in September: 56.1°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is December (22.3°F).
Average pressure in September
Crook, CO
- Average pressure in September: 29.94"Hg
The months with the highest atmospheric pressure are January and December (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Crook, CO
- Average wind speed in September: 10.3mph
The windiest month (with the highest average wind speed) is April (12.6mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).
Average humidity in September
Crook, CO
- Average humidity in September: 48%
The month with the highest relative humidity is February (67%).
The month with the lowest relative humidity is September (48%).
Average rainfall in September
Crook, CO
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Crook, CO
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is December (3.5 days).
Average snowfall in September
Crook, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (3.35").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Crook, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Crook, CO
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 1min
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 6min).
Average sunshine days in September
Crook, CO
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is May (12.4 days).
Average UV index in September
Crook, CO
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Crook, CO
- Average cloud cover in September: 20
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Crook, CO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Crook, Colorado, USA
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