July weather forecastNewcastle, WY
July
Weather in July
Extra sunscreen is a must for July as temperatures reach their zenith. Although an average high of 79.2°F (26.2°C) is recorded this month, the adventures of summer continue given the relatively low humidity. It's noteworthy that July displays the least number of cloudy days, gracing Newcastle with a plethora of sunshine. Long days in the sun pave the way for a host of outdoor recreational activities. With the lowest pressure for the year and minimal cloud cover, stargazing becomes an appealing pastime.Temperature
July is the month when Newcastle experiences its warmest temperatures, averaging a high of 79.2°F (26.2°C) and a low of 57.7°F (14.3°C).Humidity
The average relative humidity in July is 55%.Rainfall
The months with the most rainfall are June and July, with an average 2.68" (68mm) of precipitation.Snowfall
In Newcastle, snow does not fall in July and August.Daylight
In July, the average length of the day in Newcastle is 15h and 5min.On the first day of the month, sunrise is at 5:18 am and sunset at 8:42 pm. On the last day of July, sunrise is at 5:45 am and sunset at 8:21 pm MDT.
Sunshine
The average sunshine in July is 11.7h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In July, the maximum UV index of 5 transforms into these recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Newcastle, WY
- Average high temperature in July: 79.2°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.2°F).
- Average low temperature in July: 57.7°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is February (10.8°F).
Average pressure in July
Newcastle, WY
- Average pressure in July: 29.89"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in July
Newcastle, WY
- Average wind speed in July: 8.1mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in July
Newcastle, WY
- Average humidity in July: 55%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (53%).
Average rainfall in July
Newcastle, WY
- Average rainfall in July: 2.68"
The wettest months (with the highest rainfall) are June and July (2.68").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in July
Newcastle, WY
- Average rainfall days in July: 16.9 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in July
Newcastle, WY
- Average snowfall in July: 0"
The month with the highest snowfall is April (8.82").
The months with the least snowfall are July and August (0").
Average snowfall days in July
Newcastle, WY
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in July /
Average sunshine in July
Newcastle, WY
- Average daylight in July: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in July: 11h and 42min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in July
Newcastle, WY
- Average sunshine days in July: 10.3 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.7 days).
Average UV index in July
Newcastle, WY
- Average UV index in July: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in July
Newcastle, WY
- Average cloud cover in July: 18
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in July
Newcastle, WY
- Average visibility in July: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).





