Weather in Norwich, Connecticut
Roses open along the stoops. Day 59 of spring. Read this microseason across nine climate regions →
When the dew is on the grass, rain will never come to pass.
- Moonrise
- 9:29 AM
- Moonset
- 12:29 AM
- In sign
- ♊︎ Gemini
Roses open along the stoops
Norwich at a glance
- Today vs. normal: NaN°F below the seasonal normal for this latitude
- Last frost: April 25 (climatological average for this latitude)
- Microseason: 28 of 72, May 16–20
- Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.
Right now in the garden
Warm-season window is open
As of May 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
July stands as Norwich's warmest month with average temperatures around 74°F, while January brings the coldest conditions at approximately 30°F. Precipitation follows its own seasonal pattern, with March delivering the heaviest rainfall at 5.1 inches and July recording the lightest at 3.6 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 30° | 3.9″ | 7 |
| February | 32° | 3.8″ | 6 |
| March | 39° | 5.1″ | 7 |
| April | 49° | 4.7″ | 7 |
| May | 59° | 3.6″ | 7 |
| June | 68° | 4.3″ | 6 |
| July | 74° | 3.6″ | 6 |
| August | 73° | 4.4″ | 6 |
| September | 65° | 4.8″ | 6 |
| October | 54° | 4.9″ | 6 |
| November | 44° | 4.2″ | 6 |
| December | 35° | 5.0″ | 7 |
Regional context
Norwich falls within the warm-summer humid continental climate region, sharing temperature ranges, seasonal patterns, and growing conditions with other cities in this climate zone.
Similar climates: Hartford, CT, Bridgeport, CT, New Haven, CT, Waterbury, CT, Danbury, CT.
Naturalist notes
Late May brings the distinctive calls of Baltimore orioles as they establish territories in Norwich's mature oak and maple trees.
Sugar maples begin their leaf-out phase during the third week of April, their tender green foliage emerging just as soil temperatures reach consistent warmth.
Frequently asked
- When does it freeze in Norwich?
- Spring's final frost in Norwich typically occurs around mid-April, while the season's first frost returns around mid-November.
- What is the rainy season in Norwich?
- March delivers the heaviest precipitation with approximately 5.1 inches of rain on average, contributing to Norwich's annual total of roughly 52 inches.
- What is the warmest month in Norwich?
- July typically records the highest temperatures, with averages around 74°F.
- What is the coldest month in Norwich?
- January brings the coldest temperatures, averaging about 30°F.
- When can I start a vegetable garden in Norwich?
- Gardeners can plant cool-season crops like peas and lettuce around the last spring frost in mid-April, while warm-season crops such as tomatoes and peppers should wait 1–2 weeks after.
- How many rainy days does Norwich get?
- Norwich experiences approximately 78 rainy days throughout the year.
- What hardiness zone is Norwich?
- Norwich's USDA hardiness zone depends on its lowest average winter temperature; the USDA's online lookup tool provides the current zone designation when you enter the city's ZIP code.
Climate
Norwich, Connecticut experiences a warm-summer humid continental climate zone. Winter temperatures in January typically hover near 30°F, while July brings average temperatures of 74°F — creating a 45°F seasonal swing.
Annual precipitation in Norwich totals about 52 inches, distributed across roughly 78 rainy days throughout the year.
Several factors determine Norwich's weather patterns: its latitude at 41.5°N, proximity to large water bodies, and local elevation. These elements influence growing seasons, frost timing, and daily weather conditions.