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
September marks a gentle change in average high-temperature, declining from August's moderately hot 79.3°F (26.3°C) to a still warm 73.4°F (23°C). Throughout the September nights, Wyoming encounters a low-temperature of 54.7°F (12.6°C).Humidity
In September, the average relative humidity is 78%.Rainfall
In Wyoming, during September, the rain falls for 11.4 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 137.5 rainfall days, and 27.68" (703mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Wyoming.Daylight
In Wyoming, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:30 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:46 pm CDT.
Sunshine
The average sunshine in September in Wyoming is 9.2h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Make use of precautions - Suggestions to resist sunburn are communicated. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What is the usual temperature for Wyoming in September?
What is the average humidity in September in Wyoming?
How much does it rain in Wyoming in September?
When it does not snow in Wyoming?
Does it snow in Wyoming in September?
What is the average length of the day in September in Wyoming?
What time are sunrise and sunset in September in Wyoming?
How many hours of sunshine does Wyoming have in September?
What is the UV index intensity in September in Wyoming?
Average temperature in September
Wyoming, IA
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in September: 54.7°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in September
Wyoming, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Wyoming, IA
- Average wind speed in September: 8mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Wyoming, IA
- Average humidity in September: 78%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Wyoming, IA
- Average rainfall in September: 2.52"
The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in September
Wyoming, IA
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in September
Wyoming, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.16").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Wyoming, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wyoming, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Wyoming, IA
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in September
Wyoming, IA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Wyoming, IA
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Wyoming, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Wyoming, Iowa, USA
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