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 ushers in a slight temperature change, with average high-temperatures reducing from August's warm 79.3°F (26.3°C) to a pleasant 70.3°F (21.3°C). Reliance, in the month of September, anticipates a consistent average low-temperature of 51.3°F (10.7°C).Humidity
In September, the average relative humidity is 36%.Rainfall
In September, the rain falls for 7.2 days. Throughout September, 0.63" (16mm) of precipitation is accumulated. In Reliance, during the entire year, the rain falls for 93.5 days and collects up to 10.31" (262mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows in Reliance, Wyoming. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 75.5 snowfall days, and 30.16" (766mm) of snow is accumulated.Daylight
The average length of the day in September in Reliance is 12h and 28min.On the first day of September, sunrise is at 6:43 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:59 pm MDT.
Sunshine
In Reliance, the average sunshine in September is 10.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 4 suggests these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
What is the temperature in September in Reliance?
What is the average humidity in September in Reliance?
How many days does it rain in September in Reliance?
When does it start to snow in Reliance?
How many hours of daylight does Reliance have in September?
When are sunrise and sunset in September in Reliance?
How many hours of sunshine does Reliance have in September?
How high is the UV index in September in Reliance?
Average temperature in September
Reliance, WY
- Average high temperature in September: 70.3°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in September: 51.3°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in September
Reliance, WY
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Reliance, WY
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in September
Reliance, WY
- Average humidity in September: 36%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July and August (31%).
Average rainfall in September
Reliance, WY
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in September
Reliance, WY
- Average rainfall days in September: 7.2 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (4.7 days).
Average snowfall in September
Reliance, WY
- Average snowfall in September: 0.04"
The month with the highest snowfall is March (6.14").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Reliance, WY
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is December (13.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Reliance, 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 months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).
Average sunshine days in September
Reliance, WY
- Average sunshine days in September: 19.8 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (11.5 days).
Average UV index in September
Reliance, WY
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Reliance, WY
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Reliance, WY
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Reliance, Wyoming, USA
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