August weather forecastGrasmere, ID
August
Weather in August
August, the last month of the summer in Grasmere, is another tropical month, with an average temperature fluctuating between 65.7°F (18.7°C) and 89.4°F (31.9°C).Temperature
On the advent of August, Grasmere's average high-temperature exhibits a minor adjustment to a still tropical 89.4°F (31.9°C) from July's 91.2°F (32.9°C). During August, the nighttime temperature presents a clear descent from the daily peaks, falling to an average of 65.7°F (18.7°C).Humidity
The average relative humidity in August is 26%.Rainfall
August is the month with the least rainfall. Rain falls for 3.7 days and accumulates 0.2" (5mm) of precipitation.Snowfall
In Grasmere, snow does not fall in May through September.Daylight
In Grasmere, the average length of the day in August is 13h and 50min.On the first day of August, sunrise is at 6:36 am and sunset at 9:02 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 8:18 pm MDT.
Sunshine
The average sunshine in August is 11.4h.UV index
In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index of 6 during August leads to these instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. 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 August
Grasmere, ID
- Average high temperature in August: 89.4°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in August: 65.7°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is December (26.1°F).
Average pressure in August
Grasmere, ID
- Average pressure in August: 29.88"Hg
The month with the highest atmospheric pressure is January (30.26"Hg).
The months with the lowest atmospheric pressure are June and August (29.88"Hg).
Average wind speed in August
Grasmere, ID
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest months (with the lowest average wind speed) are January and September (6.5mph).
Average humidity in August
Grasmere, ID
- Average humidity in August: 26%
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is July (25%).
Average rainfall in August
Grasmere, ID
- Average rainfall in August: 0.2"
The wettest month (with the highest rainfall) is December (1.06").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in August
Grasmere, ID
- Average rainfall days in August: 3.7 days
The month with the highest number of rainy days is March (14.3 days).
The months with the least rainy days are July and August (3.7 days).
Average snowfall in August
Grasmere, ID
- Average snowfall in August: 0"
The month with the highest snowfall is December (2.64").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Grasmere, ID
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Grasmere, ID
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 11h and 24min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in August
Grasmere, ID
- Average sunshine days in August: 22.1 days
The month with the most sunshine days is July (24 days).
The month with the least sunshine days is March (13.6 days).
Average UV index in August
Grasmere, ID
- Average UV index in August: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Grasmere, ID
- Average cloud cover in August: 8
The month with the most cloud cover is December (Cloud cover 35).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in August
Grasmere, ID
- 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).
