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
Wyoming's September weather shows a modest shift in high-temperatures, falling from August's 81.9°F (27.7°C) to a still warm 76.3°F (24.6°C). An average low-temperature of 63°F (17.2°C) is observed during September nights in Wyoming, Delaware.Humidity
In Wyoming, Delaware, the average relative humidity in September is 78%.Rainfall
In Wyoming, in September, during 12.9 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, in Wyoming, there are 152.3 rainfall days, and 26.3" (668mm) of precipitation is accumulated.Snowfall
In Wyoming, Delaware, snow does not fall in April through November.Daylight
The average length of the day in September in Wyoming is 12h and 26min.On the first day of September in Wyoming, sunrise is at 6:31 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:45 pm EDT.
Sunshine
The average sunshine in September is 9.2h.UV index
In Wyoming, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 5 during September leads to these instructions:
Prioritize safety - Suggestions to prevent sun damage are offered. It's recommended to limit sun exposure when its radiation is at its peak during midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Wyoming?
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?
What is the average length of the day in September in Wyoming?
When are sunrise and sunset in September in Wyoming?
How long on average sun shines in September in Wyoming?
What is the UV index reading in September in Wyoming?
Average temperature in September
Wyoming, DE
- Average high temperature in September: 76.3°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in September
Wyoming, DE
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Wyoming, DE
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Wyoming, DE
- Average humidity in September: 78%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in September
Wyoming, DE
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in September
Wyoming, DE
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (8.1 days).
Average snowfall in September
Wyoming, DE
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.65").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Wyoming, DE
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Wyoming, DE
- 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: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in September
Wyoming, DE
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in September
Wyoming, DE
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Wyoming, DE
- Average cloud cover in September: 33
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Wyoming, DE
- 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).
Wyoming, Delaware, USA
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