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
With September's arrival, Waltman's weather changes as the average high-temperature falls from 82.6°F (28.1°C) in August to a still warm 73.4°F (23°C). Waltman temperatures generally rest at a low of 52.3°F (11.3°C) during the September nights.Humidity
In September, the average relative humidity is 38%.Rainfall
In Waltman, during September, the rain falls for 6.6 days and regularly aggregates up to 0.39" (10mm) of precipitation. In Waltman, during the entire year, the rain falls for 81 days and collects up to 8.98" (228mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Waltman. Throughout September, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, in Waltman, there are 62.6 snowfall days, and 31.65" (804mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:34 am and sunset at 7:42 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:51 pm MDT.
Sunshine
In Waltman, the average sunshine in September is 11h.UV index
In Waltman, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 4 in September translates into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
What are September temperatures in Waltman?
What is the average humidity in September in Waltman?
How many days does it rain in September in Waltman?
When does it start to snow in Waltman?
What is the average length of the day in September in Waltman?
What time are sunrise and sunset in September in Waltman?
How many hours of sunshine does Waltman have in September?
What is the UV index reading in September in Waltman?
Average temperature in September
Waltman, WY
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in September: 52.3°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is December (15.1°F).
Average pressure in September
Waltman, WY
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Waltman, WY
- Average wind speed in September: 9.3mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (8.4mph).
Average humidity in September
Waltman, WY
- Average humidity in September: 38%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (36%).
Average rainfall in September
Waltman, WY
- Average rainfall in September: 0.39"
The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days in September
Waltman, WY
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is May (10.9 days).
The month with the least rainy days is December (3.3 days).
Average snowfall in September
Waltman, WY
- Average snowfall in September: 0.08"
The month with the highest snowfall is March (5.55").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Waltman, WY
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Waltman, 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 0min
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 12min).
Average sunshine days in September
Waltman, WY
- Average sunshine days in September: 20.1 days
The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is April (13.6 days).
Average UV index in September
Waltman, WY
- Average UV index in September: 4
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, March, October, November and December (UV index 2).
Average cloud cover in September
Waltman, 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
Waltman, 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).
Waltman, Wyoming, USA
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