August weather forecastMerna, WY
August
Weather in August
The last month of the summer, August, is another warm month in Merna, Wyoming, with an average temperature varying between 51.3°F (10.7°C) and 75°F (23.9°C).Temperature
With August's advent, Merna, Wyoming, sees an average high-temperature of a still warm 75°F (23.9°C), subtly shifted from July's 76.8°F (24.9°C). Throughout August nights, Merna reports a steady thermal contrast from the day, with an average low-temperature of 51.3°F (10.7°C).Humidity
The least humid month is August, with an average relative humidity of 39%.Rainfall
The months with the least rainfall are July and August Rain falls for 8.2 days and accumulates 0.63" (16mm) of rain.Snowfall
In Merna, snow does not fall in July and August.Daylight
In August, the average length of the day in Merna is 13h and 53min.On the first day of the month, sunrise is at 6:13 am and sunset at 8:42 pm. On the last day of August, in Merna, sunrise is at 6:45 am and sunset at 7:57 pm MDT.
Sunshine
In Merna, the average sunshine in August is 11.9h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 5 in August translates into the following instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. 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 August
Merna, WY
- Average high temperature in August: 75°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is December (23.7°F).
- Average low temperature in August: 51.3°F
The month with the highest average low temperature is July (52°F).
The coldest month (with the lowest average low temperature) is December (5°F).
Average pressure in August
Merna, WY
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Merna, WY
- Average wind speed in August: 5.7mph
The windiest month (with the highest average wind speed) is June (7mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).
Average humidity in August
Merna, WY
- Average humidity in August: 39%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is August (39%).
Average rainfall in August
Merna, WY
- Average rainfall in August: 0.63"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are July and August (0.63").
Average rainfall days in August
Merna, WY
- Average rainfall days in August: 8.2 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is November (6.9 days).
Average snowfall in August
Merna, WY
- Average snowfall in August: 0"
The month with the highest snowfall is April (7.36").
The months with the least snowfall are July and August (0").
Average snowfall days in August
Merna, WY
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are February and March (15.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Merna, WY
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 11h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in August
Merna, WY
- Average sunshine days in August: 18.4 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in August
Merna, WY
- Average UV index in August: 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 August
Merna, WY
- Average cloud cover in August: 12
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in August
Merna, WY
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
