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
In Moses Lake, the average high-temperature in September decreases from a hot 86.9°F (30.5°C) in August to a warm 75.9°F (24.4°C). The nights of September anticipate an average low-temperature of 55.2°F (12.9°C).Humidity
In Moses Lake, the average relative humidity in September is 44%.Rainfall
In Moses Lake, in September, during 5.4 rainfall days, 0.31" (8mm) of precipitation is typically accumulated. In Moses Lake, during the entire year, the rain falls for 103.1 days and collects up to 7.8" (198mm) of precipitation.Snowfall
Months with snowfall in Moses Lake are January through April, September, November and December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 20.9 snowfall days, and 8.07" (205mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 32min.On the first day of September in Moses Lake, sunrise is at 6:17 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:37 pm PDT.
Sunshine
The average sunshine in September is 10.8h.UV index
In Moses Lake, Washington, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Be vigilant - Suggestions to stave off sun damage are provided. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. To cut down UV radiation exposure by about half, sport a wide-brim hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Moses Lake?
What is the average humidity in September in Moses Lake?
How much does it rain in Moses Lake in September?
When does it start snowing in Moses Lake?
What is the average length of the day in September in Moses Lake?
What time are sunrise and sunset in September in Moses Lake?
How long on average sun shines in September in Moses Lake?
How high is the UV index in September in Moses Lake?
Average temperature in September
Moses Lake, WA
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is December (34°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is August (62.2°F).
The coldest month (with the lowest average low temperature) is December (23.9°F).
Average pressure in September
Moses Lake, WA
- 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 August (29.91"Hg).
Average wind speed in September
Moses Lake, WA
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest months (with the lowest average wind speed) are January and December (5.5mph).
Average humidity in September
Moses Lake, WA
- Average humidity in September: 44%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (36%).
Average rainfall in September
Moses Lake, WA
- Average rainfall in September: 0.31"
The wettest month (with the highest rainfall) is January (1.02").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in September
Moses Lake, WA
- Average rainfall days in September: 5.4 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is July (3.8 days).
Average snowfall in September
Moses Lake, WA
- Average snowfall in September: 0.04"
The month with the highest snowfall is December (2.6").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in September
Moses Lake, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (6.8 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Moses Lake, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 10h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in September
Moses Lake, WA
- Average sunshine days in September: 23.4 days
The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is March (14.2 days).
Average UV index in September
Moses Lake, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Moses Lake, WA
- Average cloud cover in September: 16
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Moses Lake, WA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Moses Lake, Washington, USA
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