Waterbury, CT weather in August
Waterbury is warm and often humid in August, with some rain: highs average 82°F and nights drop to about 60°F. Rain falls on about 10 days. This is the peak of the warm season in Waterbury.
- Normal high
- 82°F
- Normal low
- 60°F
- Wet days
- 10
- 5.1 in total
- Muggy days
- 10
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 83°F | 80°F |
| Normal low | 62°F | 58°F |
| Chance of a wet day | 34% | 28% |
| Sunrise / sunset | 5:46 am / 8:10 pm | 6:17 am / 7:27 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 (32 mi away); average wind 6 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F7 of 31
- Hot dayshigh 90°F or more3 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 in7 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 5.1 in; a dry August brings about 2.7 in and a wet one about 7.2 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 2 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202002: average high 86°F
- Coolest August2000: average high 75°F
- Wettest August2011: 16.7 in
- Driest August1993: 1.1 in
- Highest reading97°F (August 3, 2002)
- Lowest reading40°F (August 22, 1992)
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 | 84°F | 82°F | 75°F |
| Normal low | 62°F | 60°F | 53°F |
| Wet days | 11 | 10 | 9 |
| Comfortable days | 5 | 7 | 16 |
| Daylight | 14.8 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, MA154 mi · high 76°F · 13 wet days
How Waterbury ranks in August
- Normal high271st warmest of 378 cities; 2nd of 5 in Connecticut
- Wet days248th driest of 378
- Comfortable days105th most of 341
What to pack for Waterbury in August
- A rain jacket or umbrella – rain on about 10 days
Heating and cooling
August has 10 heating degree days and 199 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Waterbury in August?
The normal high is 82°F and the normal low is 60°F. From 1991 to 2020 the hottest August reading was 97°F (August 3, 2002).
Does it rain a lot in Waterbury in August?
About 10 days in August have at least 0.01 in of precipitation, and the normal total is 5.1 in. The wettest August in 1991-2020 was in 2011 (16.7 in); the driest was in 1993 (1.1 in).
Is August a good time to visit Waterbury?
August ranks 6th of 12 months on our comfort score for Waterbury (58 out of 100). It has about 7 comfortable days and about 3 days at 90°F or hotter. The best months are May and September.
Where the numbers come from
- Temperature and rain: Burlington (USC00060973), 17 mi NNE of the city center, 505 ft (234 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Bakersville (USC00060227), 20 mi N of the city center, 686 ft (415 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Meriden Markham Muni Airport (USW00054788), 12 mi ESE of the city center, 103 ft (168 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: Hartford Bradley Intl Airport (USW00014740), 32 mi NE of the city center, 190 ft (81 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Bradley International Airport (725080-14740), 32 mi NE of the city center, 169 ft (102 ft lower than the city). Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).