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
In the transition to September, Alma observes a minor drop in the average high-temperature, shifting from an enjoyable 64.4°F (18°C) in August to a mild 58.8°F (14.9°C). Throughout September, Alma braces for a considerable drop from daytime highs, with an average low-temperature of 34.3°F (1.3°C).Humidity
The average relative humidity in September is 59%.Rainfall
In Alma, in September, it is raining for 12.9 days, with typically 1.57" (40mm) of accumulated precipitation. Throughout the year, there are 113.5 rainfall days, and 22.13" (562mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall. In Alma, Colorado, in September, snow falls for 5 days, with typically accumulated 1.57" (40mm) of snow. Throughout the year, there are 139 snowfall days, and 101.69" (2583mm) 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 6:33 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:47 pm MDT.
Sunshine
The average sunshine in September is 10.9h.UV index
In Alma, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: During September, 3 as the daily maximum UV index converts into the following advice:
Prioritize safety - Suggestions to prevent sun damage are offered. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
How many days does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Alma have in September?
How high is the UV index in September?
Average temperature in September
Alma, CO
- Average high temperature in September: 58.8°F
The warmest month (with the highest average high temperature) is July (66.2°F).
The month with the lowest average high temperature is December (22.5°F).
- Average low temperature in September: 34.3°F
The month with the highest average low temperature is July (40.5°F).
The coldest month (with the lowest average low temperature) is January (1.4°F).
Average pressure in September
Alma, CO
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is April (29.94"Hg).
Average wind speed in September
Alma, CO
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is June (6.4mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Alma, CO
- Average humidity in September: 59%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is June (52%).
Average rainfall in September
Alma, CO
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is November (1.06").
Average rainfall days in September
Alma, CO
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (23.1 days).
The month with the least rainy days is November (2.8 days).
Average snowfall in September
Alma, CO
- Average snowfall in September: 1.57"
The month with the highest snowfall is May (16.26").
The month with the least snowfall is July (0.16").
Average snowfall days in September
Alma, CO
- Average snowfall days in September: 5 days
The month with the highest number of snowfall days is April (18.8 days).
The month with the least snowfall days is July (0.5 days).
Average daylight in September /
Average sunshine in September
Alma, 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 30min).
- Average sunshine in September: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in September
Alma, CO
- Average sunshine days in September: 11.6 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (4.8 days).
Average UV index in September
Alma, CO
- Average UV index in September: 3
The months with the highest UV index are July and August (UV index 4).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Alma, CO
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in September
Alma, CO
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Alma, Colorado, USA
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