September weather forecastPinneo, CO
September
Weather in September
The first month of the autumn, September, is still a warm month in Pinneo, Colorado, with an average temperature ranging between max 79°F (26.1°C) and min 56.8°F (13.8°C).Temperature
The arrival of September corresponds with a light shift in temperature, down from a tropical 86.2°F (30.1°C) in August to a warm 79°F (26.1°C). A significant drop from the day's peak to an average low-temperature of 56.8°F (13.8°C) is noted during the nights in September.Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 47%.Rainfall
In Pinneo, during September, the rain falls for 9.2 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, there are 106.1 rainfall days, and 13.66" (347mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:22 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:37 pm MDT.
Sunshine
The average sunshine in September in Pinneo is 10.4h.UV index
The average daily maximum UV index in September in Pinneo is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Pinneo, CO
- Average high temperature in September: 79°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (38.5°F).
- Average low temperature in September: 56.8°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is December (23.2°F).
Average pressure in September
Pinneo, CO
- Average pressure in September: 29.94"Hg
The months with the highest atmospheric pressure are January and December (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Pinneo, CO
- Average wind speed in September: 9.7mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (9.4mph).
Average humidity in September
Pinneo, CO
- Average humidity in September: 47%
The months with the highest relative humidity are January and February (64%).
The months with the lowest relative humidity are August and September (47%).
Average rainfall in September
Pinneo, CO
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Pinneo, CO
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in September
Pinneo, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Pinneo, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Pinneo, CO
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 10h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).
Average sunshine days in September
Pinneo, CO
- Average sunshine days in September: 18.8 days
The month with the most sunshine days is November (23.3 days).
The month with the least sunshine days is July (12.4 days).
Average UV index in September
Pinneo, CO
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Pinneo, CO
- Average cloud cover in September: 17
The month with the most cloud cover is February (Cloud cover 31).
The months with the least cloud cover are August and September (Cloud cover 17).
Average visibility in September
Pinneo, 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).
