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 commencement of September indicates a gentle shift in the average high-temperature, receding from August's 82.2°F (27.9°C) to a still warm 73.6°F (23.1°C). During the nights in September, the temperature averages to a fresh 52.9°F (11.6°C).Humidity
In September, the average relative humidity is 42%.Rainfall
September is the month with the least rainfall. Rain falls for 6.8 days and accumulates 0.43" (11mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.16" (4mm) of snow. In Orpha, during the entire year, snow falls for 60.9 days and aggregates up to 34.21" (869mm) of snow.Daylight
The average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:27 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:44 pm MDT.
Sunshine
In Orpha, the average sunshine in September is 11.1h.UV index
In Orpha, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Take necessary precautions - Suggestions to elude sunburn are provided. To guard against the harmful effects of the Sun, minimize exposure during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When does it start snowing?
How many hours of daylight does Orpha have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Orpha have in September?
What is the UV index reading in September?
Average temperature in September
Orpha, WY
- Average high temperature in September: 73.6°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in September: 52.9°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).
Average pressure in September
Orpha, WY
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Orpha, WY
- Average wind speed in September: 9.9mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in September
Orpha, WY
- Average humidity in September: 42%
The month with the highest relative humidity is February (73%).
The month with the lowest relative humidity is August (40%).
Average rainfall in September
Orpha, WY
- Average rainfall in September: 0.43"
The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in September
Orpha, WY
- Average rainfall days in September: 6.8 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in September
Orpha, WY
- Average snowfall in September: 0.16"
The month with the highest snowfall is April (5.59").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Orpha, WY
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (12.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Orpha, WY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 11h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).
Average sunshine days in September
Orpha, WY
- Average sunshine days in September: 21.1 days
The month with the most sunshine days is October (21.6 days).
The month with the least sunshine days is April (11.3 days).
Average UV index in September
Orpha, WY
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, April, November and December (UV index 2).
Average cloud cover in September
Orpha, WY
- Average cloud cover in September: 14
The month with the most cloud cover is February (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Orpha, 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).
Orpha, Wyoming, USA
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