Hartford, CT weather in August
In August, Hartford sees highs around 83°F and lows around 64°F: warm and often humid, with frequent rain. There are about 10 days with rain. It is one of the warmest months in Hartford.
- Normal high
- 83°F
- Normal low
- 64°F
- Wet days
- 10
- 3.5 in total
- Muggy days
- 10
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 84°F | 81°F |
| Normal low | 66°F | 62°F |
| Chance of a wet day | 36% | 31% |
| Sunrise / sunset | 5:44 am / 8:09 pm | 6:15 am / 7:26 pm |
| Daylight | 14.4 h | 13.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical August day
- 6 am64°Fdew point 61°F
- 9 am73°Fdew point 62°F
- Noon80°Fdew point 61°F
- 3 pm81°Fdew point 60°F
- 6 pm77°Fdew point 61°F
- 9 pm70°Fdew point 62°F
NOAA hourly normals (local standard time) from Hartford Bradley Intl Airport (12 mi away); average wind 6 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F6 of 31
- Hot dayshigh 90°F or more5 of 31
- Muggy daysdaily mean dew point 65°F or more10 of 31
- Wet daysat least 0.01 in of rain or melted snow10 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 3.5 in; a dry August brings about 2.2 in and a wet one about 4.5 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202016: average high 89°F
- Coolest August1992: average high 79°F
- Wettest August2011: 8.4 in
- Driest August1996: 1.2 in
- Highest reading103°F (August 9, 2001)
- Lowest reading48°F (August 21, 2000)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 85°F | 83°F | 76°F |
| Normal low | 66°F | 64°F | 56°F |
| Wet days | 11 | 10 | 10 |
| Comfortable days | 4 | 6 | 15 |
| Daylight | 14.9 h | 13.8 h | 12.5 h |
Highs change by -2°F from July and -7°F into September.
Nearby alternatives in August
- Cooler: Nantucket, MA138 mi · high 76°F · 13 wet days
How Hartford ranks in August
- Normal high251st warmest of 378 cities; 1st of 5 in Connecticut
- Wet days283rd driest of 378
- Comfortable days116th most of 341
What to pack for Hartford in August
- A rain jacket or umbrella – rain on about 10 days
Heating and cooling
August has 3 heating degree days and 270 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Hartford in August?
The normal high is 83°F and the normal low is 64°F. From 1991 to 2020 the hottest August reading was 103°F (August 9, 2001).
Does it rain a lot in Hartford in August?
About 10 days in August have at least 0.01 in of precipitation, and the normal total is 3.5 in. The wettest August in 1991-2020 was in 2011 (8.4 in); the driest was in 1996 (1.2 in).
Is August a good time to visit Hartford?
August ranks 6th of 12 months on our comfort score for Hartford (57 out of 100). It has about 6 comfortable days and about 5 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain and frost dates: Hartford Brainard Fld (USW00014752), 2.6 mi SE of the city center, 19 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and humidity and wind by hour: Hartford Bradley Intl Airport (USW00014740), 12 mi N of the city center, 190 ft (140 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Snow depth: Burlington (USC00060973), 13 mi W of the city center, 505 ft (455 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Bradley International Airport (725080-14740), 12 mi N of the city center, 169 ft (119 ft higher than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).