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 sees a slight reduction in average high-temperature, with a shift from 85.6°F (29.8°C) in August to a still warm 77.2°F (25.1°C). September is characterized by a distinct thermal shift, with nighttime lows averaging at a cool 54.3°F (12.4°C).Humidity
In September, the average relative humidity in Dwyer is 40%.Rainfall
In Dwyer, during September, the rain falls for 7.4 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Dwyer, during the entire year, the rain falls for 90.8 days and collects up to 11.57" (294mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Dwyer, Wyoming. Throughout September, in the average 0.3 snowfall days, it receives 0.94" (24mm) of snow. Throughout the year, in Dwyer, there are 46.4 snowfall days, and 27.13" (689mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:26 am and sunset at 7:33 pm. On the last day of September, in Dwyer, sunrise is at 6:56 am and sunset at 6:42 pm MDT.
Sunshine
The average sunshine in September in Dwyer is 10.6h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the UV index of 5 transforms into the following advice:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
What is the average September temperature in Dwyer?
What is the average humidity in September in Dwyer?
How much does it rain in Dwyer in September?
When does it start to snow in Dwyer?
What is the average length of the day in September in Dwyer?
What time are sunrise and sunset in September in Dwyer?
How long on average sun shines in September in Dwyer?
How high is the UV index in September in Dwyer?
Average temperature in September
Dwyer, WY
- Average high temperature in September: 77.2°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is December (35.1°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is July (62.8°F).
The coldest months (with the lowest average low temperature) are February and December (21.6°F).
Average pressure in September
Dwyer, WY
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Dwyer, WY
- Average wind speed in September: 9.6mph
The windiest month (with the highest average wind speed) is January (15mph).
The calmest month (with the lowest average wind speed) is August (8.6mph).
Average humidity in September
Dwyer, WY
- Average humidity in September: 40%
The month with the highest relative humidity is February (66%).
The month with the lowest relative humidity is August (39%).
Average rainfall in September
Dwyer, WY
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Dwyer, WY
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in September
Dwyer, WY
- Average snowfall in September: 0.94"
The month with the highest snowfall is April (4.45").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Dwyer, WY
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Dwyer, WY
- 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: 10h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 6h and 36min).
Average sunshine days in September
Dwyer, WY
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is April (14.5 days).
Average UV index in September
Dwyer, WY
- 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
Dwyer, WY
- Average cloud cover in September: 16
The month with the most cloud cover is April (Cloud cover 31).
The months with the least cloud cover are August and September (Cloud cover 16).
Average visibility in September
Dwyer, WY
- 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).
Dwyer, Wyoming, USA
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