Hartford
Connecticut, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Hartford, CT

The last month of the summer, August, is another warm month in Hartford, Connecticut, with average temperature fluctuating between 62.2°F (16.8°C) and 81°F (27.2°C).

Temperature

In Hartford, the average high-temperature is essentially the same as in July - a still moderately hot 81°F (27.2°C). The average low-temperature, in August, is 62.2°F (16.8°C).

Heat index

In August, the average heat index is appraised at 85.5°F (29.7°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, clothing, pregnancy), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In August, the average relative humidity is 75%.

Rainfall

In Hartford, Connecticut, during August, the rain falls for 11.4 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Hartford, during the entire year, the rain falls for 113.2 days and collects up to 10.24" (260mm) of precipitation.

Snowfall

June through October are months without snowfall in Hartford.

Daylight

In Hartford, the average length of the day is 13.8h.

Sunshine

July and August, with an average of 10.4h of sunshine, are months with the most sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in August interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in August in Hartford?

The average high-temperature, in August, in Hartford, is 81°F (27.2°C), while the average low-temperature is 62.2°F (16.8°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines both air temperature and relative humidity, is estimated at 85.5°F (29.7°C).

What is the average humidity in August in Hartford?

In Hartford, Connecticut, the average relative humidity in August is 75%.

How much does it rain in Hartford in August?

In Hartford, in August, it is raining for 11.4 days, with typically 0.79" (20mm) of accumulated precipitation.

When it does not snow in Hartford?

June through October are months without snowfall.

What is the average length of the day in August in Hartford?

In August, the average length of the day is 13.8h.

What are the months with the most sunshine in Hartford?

July and August, with an average of 10.4h of sunshine, are months with the most sunshine in Hartford.

How long on average sun shines in August in Hartford?

In August, the average sunshine in Hartford, Connecticut, is 10.4h.

What is the month with the highest UV index in Hartford?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in August in Hartford?

The average daily maximum UV index in August in Hartford, Connecticut, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to the UV radiation.
Average temperature in August - Hartford, CT
  • Average high temperature in August: 27.2°C

The warmest month (with the highest average high temperature) is July (28.3°C).
The month with the lowest average high temperature is January (0.6°C).

  • Average low temperature in August: 16.8°C

The month with the highest average low temperature is July (17.6°C).
The coldest month (with the lowest average low temperature) is January (-5.9°C).

Average humidity in August - Hartford, CT
  • Average humidity in August: 75%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).

Average rainfall in August - Hartford, CT
  • Average rainfall in August: 20mm

The wettest months (with the highest rainfall) are June and July (27mm).
The driest month (with the least rainfall) is September (11mm).

Average rainfall days in August - Hartford, CT
  • Average rainfall days in August: 11.4 days

The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is February (6.8 days).

Average snowfall in August - Hartford, CT
  • Average snowfall in August: 0mm

The month with the highest snowfall is February (29mm).
Months with the least snowfall are June, July, August, September and October (0mm).

Average snowfall days in August - Hartford, CT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (5.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August / Average sunshine in August - Hartford, CT
  • Average daylight in August: 13.8h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in August: 10.4h

Months with the most sunshine are July and August (Average sunshine: 10.4h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average UV index in August - Hartford, CT
  • Average UV index in August: 6

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).