September weather forecastBig Water, UT
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Big Water, Utah, with temperature in the range of an average low of 63.7°F (17.6°C) and an average high of 83.3°F (28.5°C).Temperature
The arrival of September is marked by a minor reduction in average high-temperature, sliding from a hot 90.7°F (32.6°C) in August to a moderately hot 83.3°F (28.5°C). Nighttime temperatures in Big Water consistently average an enjoyable 63.7°F (17.6°C) during September.Humidity
In September, the average relative humidity is 29%.Rainfall
In September, the rain falls for 5.1 days. Throughout September, 0.35" (9mm) of precipitation is accumulated. In Big Water, during the entire year, the rain falls for 59.6 days and collects up to 4.72" (120mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Big Water, the average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 6:58 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:10 pm MDT.
Sunshine
In Big Water, the average sunshine in September is 10.1h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: During September, 6 as the daily maximum UV index converts into the following advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Big Water, UT
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (93.2°F).
The month with the lowest average high temperature is January (43.5°F).
- Average low temperature in September: 63.7°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in September
Big Water, UT
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Big Water, UT
- Average wind speed in September: 5.4mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is January (4mph).
Average humidity in September
Big Water, UT
- Average humidity in September: 29%
The month with the highest relative humidity is January (62%).
The month with the lowest relative humidity is June (17%).
Average rainfall in September
Big Water, UT
- Average rainfall in September: 0.35"
The wettest months (with the highest rainfall) are January, February, March, May, July and October (0.47").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Big Water, UT
- Average rainfall days in September: 5.1 days
The month with the highest number of rainy days is July (7.6 days).
The month with the least rainy days is June (2.6 days).
Average snowfall in September
Big Water, UT
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Big Water, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (2.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Big Water, UT
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 10h and 6min
The months with the most sunshine are June and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 7h and 6min).
Average sunshine days in September
Big Water, UT
- Average sunshine days in September: 21.1 days
The month with the most sunshine days is November (26 days).
The month with the least sunshine days is July (16.2 days).
Average UV index in September
Big Water, UT
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Big Water, UT
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 8).
Average visibility in September
Big Water, UT
- 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).





