August weather forecastGrafton, NY
August
Weather in August
The last month of the summer, August, is another warm month in Grafton, New York, with an average temperature ranging between max 78.6°F (25.9°C) and min 57.6°F (14.2°C).Temperature
Grafton records an average high-temperature of a still moderately hot 78.6°F (25.9°C) in August, closely mirroring the climate of the previous month. Nighttime temperatures in Grafton hover around an average low of 57.6°F (14.2°C) in August.Humidity
The average relative humidity in August is 77%.Rainfall
In Grafton, in August, it is raining for 13.6 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, in Grafton, New York, there are 140.6 rainfall days, and 24.17" (614mm) of precipitation is accumulated.Snowfall
In Grafton, snow does not fall in June through September.Daylight
In August, the average length of the day is 13h and 52min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:14 pm. On the last day of August, sunrise is at 6:18 am and sunset at 7:29 pm EDT.
Sunshine
In August, the average sunshine is 10.4h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In August, a regular UV index of 5 translates into these guidelines:
Undertake protective steps - Recommendations to avoid sunburn are issued. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Grafton, NY
- Average high temperature in August: 78.6°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in August: 57.6°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in August
Grafton, NY
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Grafton, NY
- Average wind speed in August: 5.1mph
The windiest months (with the highest average wind speed) are January and February (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in August
Grafton, NY
- Average humidity in August: 77%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (74%).
Average rainfall in August
Grafton, NY
- Average rainfall in August: 2.13"
The wettest months (with the highest rainfall) are May and October (2.52").
The driest month (with the least rainfall) is January (1.5").
Average rainfall days in August
Grafton, NY
- Average rainfall days in August: 13.6 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in August
Grafton, NY
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Grafton, NY
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Grafton, NY
- 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: 10h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in August
Grafton, NY
- Average sunshine days in August: 14.9 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (12.9 days).
Average UV index in August
Grafton, NY
- Average UV index in August: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in August
Grafton, NY
- Average cloud cover in August: 33
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in August
Grafton, NY
- Average visibility in August: 5mi
The months with the highest visibility are April, July, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, August, September and October (5mi).
