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 agreeable 71.1°F (21.7°C) to a refreshing 64.9°F (18.3°C). Shawnee documents a substantial shift from daytime warmth, recording an average nighttime temperature of 41°F (5°C) in September.Humidity
In Shawnee, the average relative humidity in September is 52%.Rainfall
In Shawnee, in September, during 9.4 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Shawnee, Colorado, during the entire year, the rain falls for 96 days and collects up to 10.08" (256mm) of precipitation.Snowfall
January through December are months with snowfall in Shawnee. In Shawnee, in September, during 1.5 snowfall days, 0.39" (10mm) of snow is typically accumulated. In Shawnee, Colorado, during the entire year, snow falls for 74.9 days and aggregates up to 35.39" (899mm) of snow.Daylight
In September, the average length of the day in Shawnee is 12h and 26min.On the first day of September in Shawnee, sunrise is at 6:31 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:45 pm MDT.
Sunshine
In Shawnee, the average sunshine in September is 10.6h.UV index
In Shawnee, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 3 during September translates into the following guidance:
Put precautions into practice - Protective measures against sun-induced damage are advised. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
What are the temperatures in Shawnee in September?
What is the average humidity in September in Shawnee?
How much does it rain in Shawnee in September?
How many days does it snow in September in Shawnee?
How many hours of daylight does Shawnee have in September?
When is the sunrise / sunset in September in Shawnee?
How many hours of sunshine does Shawnee have in September?
How high is the UV index in September in Shawnee?
Average temperature in September
Shawnee, CO
- Average high temperature in September: 64.9°F
The warmest month (with the highest average high temperature) is July (72.3°F).
The month with the lowest average high temperature is December (29.3°F).
- Average low temperature in September: 41°F
The month with the highest average low temperature is July (46.9°F).
The coldest month (with the lowest average low temperature) is February (11.3°F).
Average pressure in September
Shawnee, CO
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is April (29.92"Hg).
Average wind speed in September
Shawnee, CO
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Shawnee, CO
- Average humidity in September: 52%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is June (50%).
Average rainfall in September
Shawnee, CO
- Average rainfall in September: 0.55"
The wettest month (with the highest rainfall) is July (1.65").
The driest month (with the least rainfall) is December (0.28").
Average rainfall days in September
Shawnee, CO
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (2.2 days).
Average snowfall in September
Shawnee, CO
- Average snowfall in September: 0.39"
The month with the highest snowfall is March (6.73").
The months with the least snowfall are July and August (0.04").
Average snowfall days in September
Shawnee, CO
- Average snowfall days in September: 1.5 days
The month with the highest number of snowfall days is March (11.6 days).
The months with the least snowfall days are July and August (0.1 days).
Average daylight in September /
Average sunshine in September
Shawnee, 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: 10h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in September
Shawnee, CO
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is November (23.2 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Shawnee, CO
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Shawnee, CO
- Average cloud cover in September: 21
The months with the most cloud cover are February, April and May (Cloud cover 35).
The month with the least cloud cover is June (Cloud cover 20).
Average visibility in September
Shawnee, 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).
Shawnee, Colorado, USA
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