Hartford, CT weather in May
Hartford is mild in May, with frequent rain: highs average 71°F and nights drop to about 50°F. There are about 13 days with rain.
- Normal high
- 71°F
- Normal low
- 50°F
- Wet days
- 13
- 3.4 in total
- Muggy days
- 0
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 67°F | 75°F |
| Normal low | 46°F | 55°F |
| Chance of a wet day | 40% | 39% |
| Sunrise / sunset | 5:47 am / 7:48 pm | 5:18 am / 8:18 pm |
| Daylight | 14.0 h | 15.0 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 May day
- 6 am52°Fdew point 46°F
- 9 am61°Fdew point 46°F
- Noon67°Fdew point 45°F
- 3 pm69°Fdew point 45°F
- 6 pm66°Fdew point 45°F
- 9 pm59°Fdew point 46°F
NOAA hourly normals (local standard time) from Hartford Bradley Intl Airport (12 mi away); average wind 8 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F17 of 31
- Hot dayshigh 90°F or more1 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow13 of 31
- Notable rainat least 0.10 in7 of 31
- Freezing nightslow 32°F or below1 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 3.4 in; a dry May brings about 2.3 in and a wet one about 4.3 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How May varies from year to year
- Warmest May, 1991-20202015: average high 78°F
- Coolest May2005: average high 65°F
- Wettest May2006: 6.0 in
- Driest May1993: 1.5 in
- Highest reading99°F (May 26, 2010)
- Lowest reading20°F (May 1, 1997)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 60°F | 71°F | 80°F |
| Normal low | 40°F | 50°F | 60°F |
| Wet days | 11 | 13 | 11 |
| Comfortable days | 8 | 17 | 11 |
| Daylight | 13.4 h | 14.6 h | 15.2 h |
Highs change by +11°F from April and +9°F into June.
Nearby alternatives in May
- Cooler: Montauk, NY63 mi · high 64°F · 12 wet days
How Hartford ranks in May
- Normal high256th warmest of 378 cities; 1st of 5 in Connecticut
- Wet days315th driest of 378
- Comfortable days38th most of 339
What to pack for Hartford in May
- A rain jacket or umbrella – rain on about 13 days
Heating and cooling
May has 183 heating degree days and 44 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Hartford in May?
The normal high is 71°F and the normal low is 50°F. From 1991 to 2020 the hottest May reading was 99°F (most recently on May 26, 2010).
Does it rain a lot in Hartford in May?
About 13 days in May have at least 0.01 in of precipitation, and the normal total is 3.4 in. The wettest May in 1991-2020 was in 2006 (6.0 in); the driest was in 1993 (1.5 in).
Is May a good time to visit Hartford?
May ranks 1st of 12 months on our comfort score for Hartford (74 out of 100). It has about 17 comfortable days and about 1 day 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).