August weather forecastGranby, CO
August
Weather in August
August welcomes a slight downtrend from the heat in Granby, but continues to keep the summer spirit thriving. The month bears the second-highest maximum average temperature, standing ar 71.2°F (21.8°C). The cloud cover reduces concurrently with the descending temperatures while the pleasant breeze continues to persist. Consequently, the city experiences its least rainfall during this month, capping the summer with a dry and warm climate. Thus, August harmonizes the vanishing heat with limited rainfall, encouraging a seamless transition towards the coming cooler months.Temperature
Granby experiences an average high-temperature of a still pleasant 71.2°F (21.8°C) with the onset of August, subtly varied from July's 72.3°F (22.4°C). Compared to daytime temperatures, Granby's temperature drops significantly, averaging a wintry 42.1°F (5.6°C) during the nights of August.Humidity
The average relative humidity in August is 52%.Rainfall
August is the month with the least rainfall. Rain falls for 8.8 days and accumulates 0.55" (14mm) of precipitation.Snowfall
Months with snowfall are January through June, August through December. August is the first month it typically snows. Throughout August, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 110.7 snowfall days, and 59.88" (1521mm) of snow is accumulated.Daylight
In Granby, the average length of the day in August is 13h and 42min.On the first day of August, sunrise is at 6:02 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:36 pm MDT.
Sunshine
The months with the most sunshine are July and August, with an average of 11.8h of sunshine.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: In August, a daily maximum UV index of 4 leads to the following instructions:
Take precautions - Protection against skin and eye damage is obliged. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Granby, CO
- Average high temperature in August: 71.2°F
The warmest month (with the highest average high temperature) is July (72.3°F).
The month with the lowest average high temperature is December (24.6°F).
- Average low temperature in August: 42.1°F
The month with the highest average low temperature is July (43.7°F).
The coldest month (with the lowest average low temperature) is January (4.3°F).
Average pressure in August
Granby, CO
- Average pressure in August: 30.03"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.93"Hg).
Average wind speed in August
Granby, CO
- Average wind speed in August: 5mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in August
Granby, CO
- Average humidity in August: 52%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is June (49%).
Average rainfall in August
Granby, CO
- Average rainfall in August: 0.55"
The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is August (0.55").
Average rainfall days in August
Granby, CO
- Average rainfall days in August: 8.8 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is October (4.9 days).
Average snowfall in August
Granby, CO
- Average snowfall in August: 0.04"
The month with the highest snowfall is April (10.94").
The month with the least snowfall is July (0").
Average snowfall days in August
Granby, CO
- Average snowfall days in August: 0.2 days
The month with the highest number of snowfall days is February (16.1 days).
The month with the least snowfall days is July (0 days).
Average daylight in August /
Average sunshine in August
Granby, CO
- Average daylight in August: 13h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in August: 11h and 48min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in August
Granby, CO
- Average sunshine days in August: 16.9 days
The months with the most sunshine days are September and November (19.5 days).
The month with the least sunshine days is May (9.5 days).
Average UV index in August
Granby, CO
- Average UV index in August: 4
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in August
Granby, CO
- Average cloud cover in August: 16
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility in August
Granby, CO
- Average visibility in August: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April and December (5mi).
