Shelton, Connecticut Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
Shelton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Mostly Clear——83°56°—
- ThursdayJun 4Overcast——85°57°+2°
- FridayJun 5Overcast——87°61°+2°
- SaturdayJun 6Light Drizzle20%—92°65°+5°
- SundayJun 7Showers68%0.09″79°55°-13°
- MondayJun 8Overcast39%—78°49°-1°
- TuesdayJun 9Overcast14%—86°54°+8°
Ozone at AQI 51 — peak already passed at 1 PM under clear skies. AQI up 11 over the last 6 hours (gradual rise). Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 51 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 51
- UV peak
- 0.7 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 51
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
The higher the clouds, the finer the weather.
- Moonrise
- 2:48 AM
- Moonset
- 11:43 AM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Shelton at a glance
- Today vs. normal: 76°F — typical for the season
- Last frost: April 24 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 3, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
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
Shelton's warmest month is July (~76°F mean) and its coldest is January (~31°F). Rainfall peaks in April (4.2 inches) and bottoms out in November (3.1 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 31° | 3.2″ | 7 |
| February | 33° | 3.1″ | 6 |
| March | 40° | 4.1″ | 8 |
| April | 50° | 4.2″ | 7 |
| May | 60° | 3.6″ | 7 |
| June | 70° | 3.8″ | 7 |
| July | 76° | 3.3″ | 6 |
| August | 75° | 4.0″ | 6 |
| September | 68° | 4.0″ | 6 |
| October | 56° | 3.8″ | 6 |
| November | 46° | 3.1″ | 6 |
| December | 37° | 4.0″ | 8 |
Regional context
Shelton sits within a warm-summer humid continental climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Hartford, CT, Bridgeport, CT, New Haven, CT, Waterbury, CT, Danbury, CT.
Frequently asked
- When does it freeze in Shelton?
- Shelton's last spring frost typically falls around mid-April, and the first fall frost arrives around mid-November.
- What is the rainy season in Shelton?
- April is the wettest month with about 4.2 inches of rain on average; the city receives roughly 44 inches annually.
- What is the warmest month in Shelton?
- July is typically warmest, averaging about 76°F.
- What is the coldest month in Shelton?
- January is typically coldest, averaging about 31°F.
- When can I start a vegetable garden in Shelton?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-April); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Shelton get?
- Shelton averages about 78 rainy days per year.
- What hardiness zone is Shelton?
- Shelton's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Shelton, Connecticut sits in a warm-summer humid continental climate zone. January means hover near 31°F while July averages 76°F — a 44°F seasonal swing.
Across the year, Shelton receives about 44 inches of precipitation spread over roughly 78 rainy days.
The rhythm of the year is set by latitude (41.3°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.