Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Entering August, Saint Johnsbury's average high-temperature reads a still warm 75°F (23.9°C), indicating a close resemblance to the previous month's climate. During the nights in August, Saint Johnsbury records a pronounced shift from the daytime warmth, with a consistent average temperature of 52.3°F (11.3°C).Humidity
The average relative humidity in August in Saint Johnsbury is 79%.Rainfall
In Saint Johnsbury, in August, it is raining for 16.3 days, with typically 2.01" (51mm) of accumulated precipitation. Throughout the year, there are 157.2 rainfall days, and 28.35" (720mm) of precipitation is accumulated.Snowfall
In Saint Johnsbury, snow does not fall in June through September.Daylight
In Saint Johnsbury, the average length of the day in August is 13h and 59min.On the first day of August, sunrise is at 5:35 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 6:10 am and sunset at 7:25 pm EDT.
Sunshine
The months with the most sunshine are July and August, with an average of 9.8h of sunshine.UV index
The average daily maximum UV index in August is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In August, a daily UV index of 4 turns into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow in Saint Johnsbury?
What is the average length of the day in August?
When is the sunrise / sunset in August in Saint Johnsbury?
What are the months with the most sunshine?
How long on average sun shines in August in Saint Johnsbury?
What is the UV index reading in August?
Average temperature in August
Saint Johnsbury, VT
- Average high temperature in August: 75°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in August: 52.3°F
The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in August
Saint Johnsbury, VT
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in August
Saint Johnsbury, VT
- Average wind speed in August: 4.8mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in August
Saint Johnsbury, VT
- Average humidity in August: 79%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (76%).
Average rainfall in August
Saint Johnsbury, VT
- Average rainfall in August: 2.01"
The wettest months (with the highest rainfall) are June and October (2.87").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in August
Saint Johnsbury, VT
- Average rainfall days in August: 16.3 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in August
Saint Johnsbury, VT
- Average snowfall in August: 0"
The month with the highest snowfall is January (12.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Saint Johnsbury, VT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Saint Johnsbury, VT
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in August: 9h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in August
Saint Johnsbury, VT
- Average sunshine days in August: 12.3 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is February (6.6 days).
Average UV index in August
Saint Johnsbury, VT
- Average UV index in August: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in August
Saint Johnsbury, VT
- Average cloud cover in August: 39
The month with the most cloud cover is February (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in August
Saint Johnsbury, VT
- Average visibility in August: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
Saint Johnsbury, Vermont, USA
Weather forecast for your location
2. Allow the app to use your location