August weather forecastNewcastle, UT
August
Weather in August
The last month of the summer, August, is another warm month in Newcastle, Utah, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 57.4°F (14.1°C).Temperature
As Newcastle transitions into August, the average high-temperature stands at a still warm 81°F (27.2°C), offering little variation from the preceding month. A marked drop from daytime peak temperatures to an average low-temperature of 57.4°F (14.1°C) is observed during the nights in August.Humidity
The average relative humidity in August is 39%.Rainfall
In Newcastle, in August, during 11.8 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. In Newcastle, during the entire year, the rain falls for 84.2 days and collects up to 9.21" (234mm) of precipitation.Snowfall
In Newcastle, snow does not fall in June through September.Daylight
In Newcastle, the average length of the day in August is 13h and 34min.On the first day of August, sunrise is at 6:38 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 8:04 pm MDT.
Sunshine
In Newcastle, Utah, the average sunshine in August is 11.7h.UV index
In Newcastle, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 5 in August translates into these instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Newcastle, UT
- Average high temperature in August: 81°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 August: 57.4°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 August
Newcastle, UT
- Average pressure in August: 29.92"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 August
Newcastle, UT
- Average wind speed in August: 6.4mph
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 August
Newcastle, UT
- Average humidity in August: 39%
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is June (26%).
Average rainfall in August
Newcastle, UT
- Average rainfall in August: 1.46"
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 August
Newcastle, UT
- Average rainfall days in August: 11.8 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 August
Newcastle, UT
- Average snowfall in August: 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 August
Newcastle, UT
- Average snowfall days in August: 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 August /
Average sunshine in August
Newcastle, UT
- Average daylight in August: 13h and 36min
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 August: 11h and 42min
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 August
Newcastle, UT
- Average sunshine days in August: 13.8 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 August
Newcastle, UT
- Average UV index in August: 5
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 August
Newcastle, UT
- Average cloud cover in August: 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 August
Newcastle, UT
- Average visibility in August: 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).





