Stamford, CT weather in August
In August, Stamford sees highs around 81°F and lows around 64°F: warm and often humid, with frequent rain. Rain falls on about 11 days. It is one of the warmest months in Stamford.
- Normal high
- 81°F
- Normal low
- 64°F
- Wet days
- 11
- 4.4 in total
- Muggy days
- 12
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 83°F | 79°F |
| Normal low | 65°F | 61°F |
| Chance of a wet day | 35% | 32% |
| Sunrise / sunset | 5:50 am / 8:10 pm | 6:19 am / 7:29 pm |
| Daylight | 14.3 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 am66°Fdew point 62°F
- 9 am74°Fdew point 63°F
- Noon78°Fdew point 62°F
- 3 pm79°Fdew point 62°F
- 6 pm76°Fdew point 62°F
- 9 pm70°Fdew point 63°F
NOAA hourly normals (local standard time) from Westchester Co Airport (9 mi away); average wind 6 mph; clear or few clouds in 55% of daytime hours, mostly cloudy or overcast in 33%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F7 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph16 of 31
- Hot dayshigh 90°F or more2 of 31
- Muggy daysdaily mean dew point 65°F or more12 of 31
- Wet daysat least 0.01 in of rain or melted snow11 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 4.4 in; a dry August brings about 2.6 in and a wet one about 5.0 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 85°F
- Coolest August1992: average high 78°F
- Wettest August2018: 7.9 in
- Driest August1995: 0.4 in
- Highest reading101°F (August 9, 2001)
- Lowest reading49°F (August 20, 1995)
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 | 83°F | 81°F | 74°F |
| Normal low | 65°F | 64°F | 57°F |
| Wet days | 10 | 11 | 10 |
| Comfortable days | 4 | 7 | 15 |
| 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
- Warmer: Baltimore, MD203 mi · high 87°F · 10 wet days
- Cooler: Nantucket, MA180 mi · high 76°F · 13 wet days
How Stamford ranks in August
- Normal high293rd warmest of 378 cities; 4th of 5 in Connecticut
- Wet days292nd driest of 378
- Comfortable days104th most of 341
What to pack for Stamford in August
- A rain jacket or umbrella – rain on about 11 days
- A swimsuit – about 16 beach days
Heating and cooling
August has 4 heating degree days and 233 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Stamford in August?
The normal high is 81°F and the normal low is 64°F. From 1991 to 2020 the hottest August reading was 101°F (August 9, 2001).
Does it rain a lot in Stamford in August?
About 11 days in August have at least 0.01 in of precipitation, and the normal total is 4.4 in. The wettest August in 1991-2020 was in 2018 (7.9 in); the driest was in 1995 (0.4 in).
Is August a good time to visit Stamford?
August ranks 6th of 12 months on our comfort score for Stamford (59 out of 100). It has about 7 comfortable days and about 2 days at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature, rain, frost dates and humidity and wind by hour: Westchester Co Airport (USW00094745), 8.8 mi W of the city center, 379 ft (363 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Bridgeport Sikorsky Mem Airport (USW00094702), 23 mi ENE of the city center, 5 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Teterboro Airport (USW00094741), 31 mi WSW of the city center, 9 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Westchester County Airport (725037-94745), 8.7 mi W of the city center, 370 ft (354 ft higher than the city). Hourly observations, 1991-2020.