September weather forecastNewcastle, UT
September
Weather in September
The first month of the autumn, September, is still a warm month in Newcastle, Utah, with an average temperature fluctuating between 73.4°F (23°C) and 50.9°F (10.5°C).Temperature
The onset of September is marked by a minor decrease in temperature, transitioning from 81°F (27.2°C) in August to a still moderately hot 73.4°F (23°C). Following the sharp contrast to daytime warmth, an average nighttime temperature of 50.9°F (10.5°C) gets registered during September.Humidity
In September, the average relative humidity is 40%.Rainfall
In Newcastle, in September, it is raining for 7.4 days, with typically 0.67" (17mm) of accumulated precipitation. Throughout the year, there are 84.2 rainfall days, and 9.21" (234mm) of precipitation is accumulated.Snowfall
In Newcastle, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 7:05 am and sunset at 8:02 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:18 pm MDT.
Sunshine
In September, the average sunshine is 9.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Newcastle, UT
- Average high temperature in September: 73.4°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is December (20.8°F).
Average pressure in September
Newcastle, UT
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Newcastle, UT
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is June (8.5mph).
The calmest month (with the lowest average wind speed) is January (6.2mph).
Average humidity in September
Newcastle, UT
- Average humidity in September: 40%
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is June (26%).
Average rainfall in September
Newcastle, UT
- Average rainfall in September: 0.67"
The wettest month (with the highest rainfall) is July (1.81").
The driest month (with the least rainfall) is June (0.24").
Average rainfall days in September
Newcastle, UT
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is July (14.2 days).
The month with the least rainy days is November (3.2 days).
Average snowfall in September
Newcastle, UT
- Average snowfall in September: 0"
The month with the highest snowfall is December (4.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Newcastle, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Newcastle, 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 36min).
- Average sunshine in September: 9h and 48min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 6h and 24min).
Average sunshine days in September
Newcastle, UT
- Average sunshine days in September: 19.1 days
The month with the most sunshine days is June (24 days).
The month with the least sunshine days is July (13.4 days).
Average UV index in September
Newcastle, UT
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Newcastle, UT
- Average cloud cover in September: 10
The month with the most cloud cover is December (Cloud cover 31).
The month with the least cloud cover is June (Cloud cover 8).
Average visibility in September
Newcastle, 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).
