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
August commences with an average high-temperature of a still warm 81°F (27.2°C), showing little deviation from July's 81.9°F (27.7°C). An average minimum temperature of 63°F (17.2°C) marks the month of August in Watertown.Heat index
August's average heat index is evaluated at 84.2°F (29°C). If one sustains activity during exposure, it could lead to a sense of fatigue, with a chance of heat cramps.Heat index details are generally centered around shaded locations and a mild breeze. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
In Watertown, Massachusetts, the average relative humidity in August is 73%.Rainfall
In Watertown, Massachusetts, in August, during 7.8 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. Throughout the year, in Watertown, there are 85.9 rainfall days, and 5.87" (149mm) of precipitation is accumulated.Snowfall
June through October are months without snowfall in Watertown.Daylight
In August, the average length of the day is 13h and 51min.On the first day of August, sunrise is at 5:38 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:09 am and sunset at 7:20 pm EDT.
Sunshine
With an average of 10.5h of sunshine, August has the most sunshine of the year in Watertown.UV index
The months with the highest UV index in Watertown are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 6 in August leads to these recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the temperature in August in Watertown?
What is the average humidity in August in Watertown?
How much does it rain in Watertown in August?
When it does not snow in Watertown?
What is the average length of the day in August in Watertown?
What time are sunrise and sunset in August in Watertown?
What month has the most sunshine in Watertown?
How many hours of sunshine does Watertown have in August?
When is the highest UV index in Watertown?
What is the UV index reading in August in Watertown?
Average temperature in August
Watertown, MA
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in August: 63°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in August
Watertown, MA
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Watertown, MA
- Average wind speed in August: 5.8mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in August
Watertown, MA
- Average humidity in August: 73%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (70%).
Average rainfall in August
Watertown, MA
- Average rainfall in August: 0.43"
The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days in August
Watertown, MA
- Average rainfall days in August: 7.8 days
The month with the highest number of rainy days is July (10.2 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in August
Watertown, MA
- Average snowfall in August: 0"
The month with the highest snowfall is December (0.91").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in August
Watertown, MA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Watertown, MA
- Average daylight in August: 13h and 5min
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: 10h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in August
Watertown, MA
- Average sunshine days in August: 19.9 days
The months with the most sunshine days are January and November (22.5 days).
The month with the least sunshine days is June (17.5 days).
Average UV index in August
Watertown, MA
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in August
Watertown, MA
- Average cloud cover in August: 32
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Watertown, MA
- 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).
Watertown, Massachusetts, USA
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