Waterbury, CT weather in May
In May, Waterbury sees highs around 70°F and lows around 47°F: mild, with frequent rain. Rain falls on about 12 days.
- Normal high
- 70°F
- Normal low
- 47°F
- Wet days
- 12
- 4.2 in total
- Muggy days
- 0
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 66°F | 74°F |
| Normal low | 42°F | 52°F |
| Chance of a wet day | 39% | 38% |
| Sunrise / sunset | 5:48 am / 7:49 pm | 5:20 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 (32 mi away); average wind 8 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F16 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 snow12 of 31
- Notable rainat least 0.10 in8 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 4.2 in; a dry May brings about 2.7 in and a wet one about 5.3 in (25th and 75th percentiles). About 3 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 64°F
- Wettest May2006: 10.3 in
- Driest May1993: 0.7 in
- Highest reading95°F (May 19, 2017)
- Lowest reading22°F (May 1, 1992)
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 | 70°F | 79°F |
| Normal low | 36°F | 47°F | 57°F |
| Wet days | 11 | 12 | 11 |
| Comfortable days | 8 | 16 | 12 |
| Daylight | 13.3 h | 14.5 h | 15.1 h |
Highs change by +10°F from April and +9°F into June.
Nearby alternatives in May
- Warmer: Baltimore, MD244 mi · high 76°F · 12 wet days
- Cooler: Montauk, NY67 mi · high 64°F · 12 wet days
How Waterbury ranks in May
- Normal high262nd warmest of 378 cities; 2nd of 5 in Connecticut
- Wet days275th driest of 378
- Comfortable days61st most of 339
What to pack for Waterbury in May
- A rain jacket or umbrella – rain on about 12 days
Heating and cooling
May has 229 heating degree days and 31 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Waterbury in May?
The normal high is 70°F and the normal low is 47°F. From 1991 to 2020 the hottest May reading was 95°F (most recently on May 19, 2017).
Does it rain a lot in Waterbury in May?
About 12 days in May have at least 0.01 in of precipitation, and the normal total is 4.2 in. The wettest May in 1991-2020 was in 2006 (10.3 in); the driest was in 1993 (0.7 in).
Is May a good time to visit Waterbury?
May ranks 1st of 12 months on our comfort score for Waterbury (72 out of 100). It has about 16 comfortable days and about 1 day 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).