Norwich, CT Weather & Climate Normals
What a normal year in Norwich actually looks like
On the 30-year record NOAA keeps for Norwich, CT, the comfort score comes out to 46/100, strongly seasonal: Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. Only 5 months a year land in the 55–75°F range this site treats as mild.
How much Norwich's weather actually swings
Average temperatures in Norwich run from 30°F in Jan up to 74°F in Jul, a 44.9°F seasonal swing, a middling gap by national standards.
Norwich, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 38°F | 21°F | 3.89in | 9in |
| Feb | 41°F | 23°F | 3.75in | 7.1in |
| Mar | 48°F | 29°F | 5.09in | 5in |
| Apr | 59°F | 39°F | 4.71in | 0.8in |
| May | 70°F | 49°F | 3.64in | 0in |
| Jun | 78°F | 59°F | 4.27in | 0in |
| Jul | 84°F | 65°F | 3.63in | 0in |
| Aug | 83°F | 63°F | 4.41in | 0in |
| Sep | 76°F | 55°F | 4.79in | 0in |
| Oct | 64°F | 44°F | 4.86in | 0in |
| Nov | 53°F | 34°F | 4.17in | 0.3in |
| Dec | 43°F | 27°F | 4.97in | 5.6in |
If you're timing a visit, May, Jun, Jul, Aug, and Sep are Norwich's mildest stretch; if you're moving there, you should plan around Jan's cold instead.
How wet Norwich actually gets
Over a typical year, Norwich sees about 52.18in of precipitation a year across roughly 120 days with measurable rain or snow, with 27.8in of snow a year.
Norwich against the rest of the country
Out of 4876 cities scored here, Norwich comes in at 2944; within CT alone it ranks 17 of 21. Population is about 39,993.
Checking the actual forecast
These figures come from Norwich Public Utility Plt, CT US, the NOAA station 1.9 miles from Norwich, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is