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
Washington Terrace experiences a temperature shift at the start of September, with average high-temperatures adjusting from a moderately hot 81.9°F (27.7°C) in August to an agreeable 72.5°F (22.5°C). Washington Terrace's temperature tends to fall to an average low of 52.7°F (11.5°C) during the nights of September.Humidity
In September, the average relative humidity is 44%.Rainfall
In Washington Terrace, Utah, in September, it is raining for 7.5 days, with typically 0.98" (25mm) of accumulated precipitation. In Washington Terrace, during the entire year, the rain falls for 91.6 days and collects up to 11.06" (281mm) 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 0.39" (10mm) of snow. Throughout the year, there are 37.8 snowfall days, and 24.76" (629mm) of snow is accumulated.Daylight
In Washington Terrace, the average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:55 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:10 pm MDT.
Sunshine
In September, the average sunshine is 9.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In September, an average UV index of 5 transforms into the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in Washington Terrace in September?
When does it start snowing?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Washington Terrace?
What is the UV index intensity in September?
Average temperature in September
Washington Terrace, UT
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 52.7°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 (21.6°F).
Average pressure in September
Washington Terrace, UT
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Washington Terrace, UT
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).
Average humidity in September
Washington Terrace, UT
- Average humidity in September: 44%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).
Average rainfall in September
Washington Terrace, UT
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is April (1.26").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Washington Terrace, UT
- Average rainfall days in September: 7.5 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in September
Washington Terrace, UT
- Average snowfall in September: 0.39"
The month with the highest snowfall is January (6.89").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Washington Terrace, UT
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Washington Terrace, UT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 5min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Washington Terrace, UT
- Average sunshine days in September: 18.8 days
The months with the most sunshine days are October and November (21.6 days).
The month with the least sunshine days is April (14.7 days).
Average UV index in September
Washington Terrace, UT
- 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
Washington Terrace, UT
- Average cloud cover in September: 13
The months with the most cloud cover are January and February (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Washington Terrace, UT
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Washington Terrace, Utah, USA
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