Hartford, Connecticut Weather
Last leaves cling stubbornly. Day 50 of autumn. Read this microseason across nine climate regions →
Hartford weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 4:29 PM EST · Open-Meteo
- TodayNov 10Clear——59°45°—
- WednesdayNov 11Overcast——57°41°-2°
- ThursdayNov 12Rain81%0.52″54°43°-3°
- FridayNov 13Drizzle86%0.17″49°40°-5°
- SaturdayNov 14Light Snow Shwrs29%0.03″43°38°-6°
- SundayNov 15Overcast——48°37°+5°
- MondayNov 16Partly Cloudy——51°37°+3°
Air quality now AQI 26 · Good
AQI 26 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 6.1 µg/m³ (AQI 34) with a 0.94 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in stagnant air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 6.1 µg/m³ (AQI 34) with a 0.94 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.94
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
When the wind is in the west, the weather is at its best.
- Moonrise
- 8:14 AM
- Moonset
- 5:07 PM
- In sign
- ♐︎ Sagittarius
Last leaves cling stubbornly
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Hartford at a glance
- Today vs. normal: Today averages 52°F (high 59°F, low 45°F), 7°F above the 45°F normal for Nov 10
- Last frost: April 17 (1991–2020 median, NOAA station 4 km away)
- Microseason: Nov 6–10
- Planting calendar: November — harvest fall brassicas, carrots
16-Day Forecast — Hartford
- Tue59°46°2%
- Wed57°41°2%
- Thu54°43°81%
- Fri49°40°86%
- Sat43°38°29%
- Sun48°37°1%
- Mon51°37°1%
- Tue49°36°2%
- Wed49°37°1%
- Thu52°35°4%
- Fri54°38°4%
- Sat58°40°11%
- Sun62°44°29%
- Mon64°54°35%
- Tue54°35°27%
- Wed45°34°10%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Hartford
Interactive wind and temperature map centered on Hartford — it loads in your browser. Open the full weather map.
Right now in the garden
Post-frost dormancy
As of November 10, the season's first frost (typically October 26) is due or past. Bring frost-tender plants indoors, mulch overwintering beds, and turn spent plantings under. This city's planting calendar for November: harvest fall brassicas and carrots.
Sun & seasons in Hartford
Hartford sits in Capitol County, where the year’s longest day runs 15h 13m of daylight and its shortest just 9h 8m — a swing of +6h 5m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Hartford is the state’s largest city. The nearest town Hartford tracks is Waterbury, roughly 23 miles to the SW.
Air quality in Hartford
Air quality in Hartford’s county has held roughly steady since 2020; its cleanest year on record was 2024 (median AQI 39). See the full air-quality history for Hartford.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes | radishes |
| May | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| July | tomatoes, peppers, beans, squash | lettuce, peas, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
In Hartford, July runs warmest near 75°F and January coldest around 28°F, while December is the wettest month (4.2 inches) and February the driest (2.9 inches).
| Month | Mean temp | Precip |
|---|---|---|
| January | 28° | 3.5″ |
| February | 30° | 2.9″ |
| March | 38° | 3.5″ |
| April | 50° | 3.9″ |
| May | 58° | 3.6″ |
| June | 68° | 3.7″ |
| July | 75° | 3.5″ |
| August | 74° | 3.8″ |
| September | 67° | 3.4″ |
| October | 56° | 3.4″ |
| November | 43° | 4.1″ |
| December | 33° | 4.2″ |
Regional context
Similar climates Blue Hills, CT, Glastonbury Center, CT, New Britain, CT
Per modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo), Hartford runs from a 28°F January mean to 75°F in July, a 47°F seasonal spread, with near 43.6 inches of precipitation.
No season owns Hartford's rain: December reaches 4.2 inches and February keeps 2.9 inches, an even spread through Hartford's year. That even rhythm groups Hartford with places like Blue Hills, CT, Glastonbury Center, CT and New Britain, CT.
Around April 17, Hartford sheds its freezing nights — kale, peas, spinach, and parsnips go into Hartford's beds. Tomatoes and peppers do best set out two weeks later in Hartford, once nights clear the mid-40s°F. Frost returns to Hartford near October 26, ending the tender-crop season. Open lawns in Hartford whiten first when frost returns.
Similar climates: Blue Hills, CT, Glastonbury Center, CT, New Britain, CT, Weatogue, CT, Simsbury Center, CT.
Frequently asked
- When does it freeze in Hartford?
- In Hartford, expect the last spring frost near April 17; Hartford's first autumn frost comes around October 26.
- What is the rainy season in Hartford?
- Hartford sees its heaviest rain in December (around 4.2 inches), part of roughly 44 inches a year.
- What is the warmest month in Hartford?
- On average July tops the year in Hartford at about 75°F.
- What is the coldest month in Hartford?
- The coldest stretch in Hartford falls in January, around 28°F on average.
- When can I start a vegetable garden in Hartford?
- Around April 17, start frost-hardy crops in Hartford; tomatoes and basil belong a fortnight later.
- What hardiness zone is Hartford?
- Since January in Hartford averages 28°F, Hartford's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Hartford?
- Hartford's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Hartford?
- See this week's day-by-day rain chances for Hartford in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Hartford?
- Current conditions for Hartford and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Hartford forecast updated?
- The Hartford forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Hartford?
- Today's sunrise and sunset times for Hartford are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Hartford?
- The next few days in Hartford's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Hartford sits at 41.8°N; its climate zone is warm-summer humid continental (Köppen approximation).
ZIP codes in Hartford
- 06101
- 06102
- 06103
- 06104
- 06105
- 06106
- 06112
- 06114
- 06115
- 06120
- 06123
- 06126
- 06127
- 06132
- 06133
- 06134
- 06140
- 06141
- 06142
- 06143
- 06144
- 06145
- 06146
- 06147
- 06150
- 06151
- 06152
- 06154
- 06160
- 06167
- 06176
- 06183