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Norwich Weather by Month
Average temperatures, rainfall and humidity for Norwich, United States, month by month, built from OpenWeather's historical records. Use it to see what a typical Norwich month looks like before you travel — then check the live Norwich forecast for the days ahead.
Warmest month
July
29°C average high
Coolest month
January
-5°C average low
Wettest month
July
111 mm of rain
Driest month
February
40 mm of rain
Average temperature and rainfall in Norwich by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 3°C | -5°C | -22°C / 19°C | 52 mm | 69% | 12 km/h |
| February | 4°C | -5°C | -23°C / 22°C | 40 mm | 68% | 12 km/h |
| March | 9°C | -1°C | -18°C / 26°C | 57 mm | 63% | 14 km/h |
| April | 15°C | 5°C | -6°C / 34°C | 82 mm | 63% | 13 km/h |
| May | 22°C | 10°C | 0°C / 34°C | 102 mm | 67% | 11 km/h |
| June | 26°C | 15°C | 5°C / 38°C | 94 mm | 71% | 10 km/h |
| July | 29°C | 19°C | 11°C / 38°C | 111 mm | 74% | 9 km/h |
| August | 28°C | 17°C | 9°C / 35°C | 80 mm | 75% | 9 km/h |
| September | 24°C | 14°C | 3°C / 34°C | 87 mm | 77% | 9 km/h |
| October | 18°C | 9°C | -5°C / 30°C | 86 mm | 76% | 10 km/h |
| November | 11°C | 2°C | -13°C / 26°C | 57 mm | 69% | 11 km/h |
| December | 6°C | -2°C | -16°C / 19°C | 78 mm | 73% | 11 km/h |
Best time to visit Norwich
The most comfortable time to visit Norwich is generally May to June and September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around July, totalling about 926 mm a year.
Travellers who prefer heat should aim for July, when highs average 29°C. July is the month to avoid if rain would spoil your plans — it averages 111 mm, roughly 3× the rainfall of February.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Norwich forecast for what is happening now.