Hartford, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hartford, a city in Hartford County, Connecticut.
Today
69°F
Mostly Sunny
Mostly sunny, with a high near 69. Northeast wind 1 to 5 mph.
7-day forecast for Hartford
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Mostly Sunny | 1 to 5 mph NE | 0% |
| Tonight | 51°F | Mostly Cloudy | 3 mph SE | 1% |
| Sunday | 64°F | Rain Showers | 2 to 7 mph SE | 85% |
| Sunday Night | 53°F | Rain Showers | 5 to 13 mph E | 79% |
| Monday | 67°F | Partly Sunny | 7 to 13 mph N | 11% |
| Monday Night | 47°F | Mostly Cloudy | 3 to 7 mph N | 3% |
| Tuesday | 63°F | Mostly Cloudy | 10 mph NE | 5% |
| Tuesday Night | 46°F | Mostly Cloudy | 6 to 9 mph NE | 4% |
| Wednesday | 65°F | Partly Sunny | 9 to 15 mph NE | 5% |
| Wednesday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 13 mph NE | 24% |
| Thursday | 63°F | Chance Rain Showers | 14 to 17 mph NE | 32% |
| Thursday Night | 47°F | Chance Rain Showers | 14 to 17 mph N | 36% |
| Friday | 64°F | Chance Rain Showers | 15 to 18 mph N | 33% |
| Friday Night | 48°F | Chance Rain Showers | 14 to 17 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov) for Hartford (41.766, -72.682). Updated through the day.
Growing snapshot for Hartford
Last spring frost
Apr 17
First fall frost
Oct 26
Growing season
191 days
Hardiness zone
6b
More local growing data for Hartford: nearby ZIP 06103 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
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Climate data from the nearest NOAA station, Hartford Brainard Fld, Ct (2.3 mi from Hartford). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.