Middletown, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Middletown, a city in Middlesex County, Connecticut.
Today
70°F
Mostly Sunny
Mostly sunny. High near 70, with temperatures falling to around 68 in the afternoon. Northeast wind 2 to 6 mph.
7-day forecast for Middletown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Mostly Sunny | 2 to 6 mph NE | 0% |
| Tonight | 51°F | Mostly Cloudy | 3 mph SE | 1% |
| Sunday | 65°F | Rain | 1 to 7 mph SE | 95% |
| Sunday Night | 52°F | Rain | 2 to 9 mph NE | 95% |
| Monday | 67°F | Slight Chance Light Rain then Partly Sunny | 7 to 12 mph N | 22% |
| Monday Night | 47°F | Mostly Cloudy | 3 to 8 mph NE | 4% |
| Tuesday | 63°F | Mostly Cloudy | 10 mph NE | 5% |
| Tuesday Night | 46°F | Mostly Cloudy | 7 to 10 mph NE | 5% |
| Wednesday | 65°F | Partly Sunny | 12 to 16 mph NE | 4% |
| Wednesday Night | 46°F | Mostly Cloudy then Chance Rain Showers | 12 to 15 mph NE | 25% |
| Thursday | 63°F | Chance Rain Showers | 15 to 18 mph NE | 31% |
| Thursday Night | 47°F | Chance Rain Showers | 14 to 17 mph N | 37% |
| Friday | 64°F | Chance Rain Showers | 15 to 18 mph N | 33% |
| Friday Night | 47°F | Chance Rain Showers | 16 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov) for Middletown (41.549, -72.657). Updated through the day.
Growing snapshot for Middletown
Last spring frost
Apr 26
First fall frost
Oct 16
Growing season
175 days
Hardiness zone
6b
More local growing data for Middletown: nearby ZIP 06457 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
Chester Center
Clinton
Deep River Center
Durham
East Hampton
Essex Village
Fenwick
Higganum
Lake Pocotopaug
Moodus
Old Saybrook Center
Portland
Saybrook Manor
Westbrook Center
Climate data from the nearest NOAA station, Meriden Markham Muni Ap, Ct (9.1 mi from Middletown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.