Waterbury, CT Weather & Climate Normals
Waterbury's real weather, in one number
Waterbury, CT scores 50/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Waterbury's hottest and coldest months
Waterbury's hottest month is Jul, averaging 73°F; its coldest is Jan, averaging 28°F, a 45.4°F swing across the year, one of the widest gaps in this dataset.
Waterbury's weather across the year
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 37°F | 19°F | 3.05in |
| Feb | 39°F | 20°F | 2.93in |
| Mar | 48°F | 28°F | 4.05in |
| Apr | 60°F | 38°F | 4.13in |
| May | 70°F | 48°F | 3.48in |
| Jun | 79°F | 57°F | 4.05in |
| Jul | 84°F | 63°F | 3.38in |
| Aug | 82°F | 61°F | 3.54in |
| Sep | 75°F | 54°F | 4.28in |
| Oct | 64°F | 42°F | 4.49in |
| Nov | 52°F | 32°F | 3.36in |
| Dec | 42°F | 25°F | 4.12in |
May, Jun, Jul, Aug, and Sep are the best time to see Waterbury at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Waterbury
Over a typical year, Waterbury sees about 44.86in of precipitation a year across roughly 132 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Waterbury ranks
Waterbury ranks 1642 of 4876 US cities in this dataset for comfort score, and 5 of 21 within CT. About 115,908 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Meriden Markham Muni Ap, CT US, 11.3 miles from Waterbury, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is