September weather forecastMontezuma, CO
September
Weather in September
September, the first month of the autumn in Montezuma, is still a mild month, with an average temperature fluctuating between 58.5°F (14.7°C) and 33.4°F (0.8°C).Temperature
The arrival of September signals a subtle shift in temperature, down from 64.9°F (18.3°C) in August to a still refreshing 58.5°F (14.7°C). A significant drop from the day's peak to an average low-temperature of 33.4°F (0.8°C) is noted during the nights in September.Humidity
In Montezuma, the average relative humidity in September is 58%.Rainfall
In Montezuma, in September, during 12.5 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Montezuma, during the entire year, the rain falls for 111.5 days and collects up to 23.19" (589mm) of precipitation.Snowfall
Months with snowfall are January through December. In Montezuma, in September, during 5.8 snowfall days, 1.97" (50mm) of snow is typically accumulated. Throughout the year, there are 149 snowfall days, and 108.54" (2757mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 6:32 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:46 pm MDT.
Sunshine
In September, the average sunshine is 10.7h.UV index
The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, an average UV index of 2 transforms into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Around midday, solar radiation is most harmful; hence, exposure should be limited. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Montezuma, CO
- Average high temperature in September: 58.5°F
The warmest month (with the highest average high temperature) is July (67.1°F).
The month with the lowest average high temperature is December (22.5°F).
- Average low temperature in September: 33.4°F
The month with the highest average low temperature is July (39.7°F).
The coldest month (with the lowest average low temperature) is December (0.9°F).
Average pressure in September
Montezuma, CO
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is April (29.93"Hg).
Average wind speed in September
Montezuma, CO
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Montezuma, CO
- Average humidity in September: 58%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is June (53%).
Average rainfall in September
Montezuma, CO
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in September
Montezuma, CO
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (22.7 days).
The month with the least rainy days is November (2.8 days).
Average snowfall in September
Montezuma, CO
- Average snowfall in September: 1.97"
The month with the highest snowfall is April (18.27").
The month with the least snowfall is July (0.47").
Average snowfall days in September
Montezuma, CO
- Average snowfall days in September: 5.8 days
The month with the highest number of snowfall days is April (21 days).
The month with the least snowfall days is July (1.8 days).
Average daylight in September /
Average sunshine in September
Montezuma, CO
- Average daylight in September: 12h and 24min
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: 10h and 42min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in September
Montezuma, CO
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (5.3 days).
Average UV index in September
Montezuma, CO
- Average UV index in September: 2
The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in September
Montezuma, CO
- Average cloud cover in September: 21
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 19).
Average visibility in September
Montezuma, CO
- Average visibility in September: 6mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
