East Hartford, Connecticut climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put East Hartford's center at January lows of 19°F and July highs of 85°F, a yearly mean of 51.1°F and 46.0 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Hartford (13 miles N, 190 ft), has January lows of 19°F and July highs of 85°F.
50,798 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 37° 19°
- Feb 40° 21°
- Mar 48° 28°
- Apr 61° 38°
- May 72° 48°
- Jun 80° 57°
- Jul 85° 63°
- Aug 83° 61°
- Sep 76° 54°
- Oct 64° 42°
- Nov 52° 33°
- Dec 42° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
The months above are NOAA's gridded normals at East Hartford's center.
What is each month like in East Hartford?
NOAA's grid estimates the normals every 5 km or so from the stations around each point, terrain included. It smooths between stations, so night lows at the heart of a large city can run warmer than the grid shows: at five big-city airports we compared, the grid's highs were within about 1°F of the station and its lows 1-6°F cooler. The nearest record's high and low are beside each month.
| Month | High | Low | Mean | Precip. | Hartford high | Hartford low |
|---|---|---|---|---|---|---|
| January | 37°F | 19°F | 27.9°F | 3.24 | 35°F | 19°F |
| February | 40°F | 21°F | 30.3°F | 2.88 | 39°F | 21°F |
| March | 48°F | 28°F | 38.1°F | 3.90 | 47°F | 28°F |
| April | 61°F | 38°F | 49.1°F | 3.95 | 61°F | 38°F |
| May | 72°F | 48°F | 59.7°F | 3.52 | 72°F | 48°F |
| June | 80°F | 57°F | 68.5°F | 4.15 | 80°F | 58°F |
| July | 85°F | 63°F | 74.0°F | 4.00 | 85°F | 63°F |
| August | 83°F | 61°F | 72.3°F | 3.99 | 83°F | 62°F |
| September | 76°F | 54°F | 64.9°F | 4.10 | 76°F | 54°F |
| October | 64°F | 42°F | 52.9°F | 4.56 | 64°F | 42°F |
| November | 52°F | 33°F | 42.6°F | 3.61 | 52°F | 33°F |
| December | 42°F | 25°F | 33.4°F | 4.12 | 41°F | 25°F |
In metric: a yearly mean of 10.6°C, January lows of −7°C, July highs of 30°C and 1,169 mm of precipitation a year.
Source: NOAA NCEI U.S. Monthly Gridded Climate Normals 1991-2020 (nClimGrid, accession 0245564); NOAA NCEI 1991-2020 station normals. The grid cell holding the city's Census center point.
What do the station records around East Hartford say?
Each row is a NOAA station's own 1991-2020 normals, with the snow and frost dates the grid does not give. A record downhill or nearer the coast than the city can run warmer, one uphill cooler: compare the elevations.
| Record | Where | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| HartfordHartford-Bradley International Airport | 13 mi N | 190 ft | 51.0°F | 19°F | 85°F | 47.0 | 52 | April 21 |
| Burlington | 17 mi W | 505 ft | 50.0°F | 17°F | 84°F | 53.5 | 39 | April 25 |
| Storrs | 20 mi E | 665 ft | 49.6°F | 19°F | 81°F | 49.3 | 39 | April 19 |
Source: NOAA NCEI 1991-2020 U.S. Climate Normals; place center and population: Census Bureau 2024. Last frost: the median last spring date of 32°F.
How much snow, how late a frost, what zone and how much sun in East Hartford?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Hartford (13 miles N, 190 ft). It gets 52 inches of snow in a normal year. The last spring frost (32°F) comes after April 21 in half of years and the first autumn frost before October 16. Its record high is 103°F (2011) and its record low −26°F (1961), on the National Weather Service's long record for the area (kept since 1905).
The USDA's 2023 Plant Hardiness Zone Map puts East Hartford in zone 6b across its 2 ZIP code areas.
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (3.9 kWh per square metre a day, NASA POWER 2001-2020); July is the sunniest month (79%) and December the cloudiest (67%).
Hartford's page has its months, frost probabilities, records by month and recent years. NOAA's grid has monthly figures only, so there are no day-by-day month pages for East Hartford; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USW00014740; records: ACIS; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; sunshine: NASA POWER.
How does the climate vary across East Hartford, ZIP code by ZIP code?
2 ZIP code areas lie wholly or partly in East Hartford. On NOAA's grid 06118 is the warmest (51.2°F a year) and 06108 the coolest (51.1°F), so the city is nearly uniform. Each row also names the nearest station record and its frost dates.
| ZIP code | Zone | Year | Jan low | Jul high | Precip. | Nearest record | Last frost | First frost |
|---|---|---|---|---|---|---|---|---|
| 06108 | 6b | 51.1°F | 19°F | 85°F | 46.0 | Hartford (11 mi) | April 21 | October 16 |
| 06118 | 6b | 51.2°F | 19°F | 85°F | 46.0 | Hartford (14 mi) | April 21 | October 16 |
Source: Census Bureau 2020 ZCTA-to-place relationship file and ZCTA centers; NOAA NCEI gridded and station normals, 1991-2020. A ZIP area counts when at least a tenth of its land (and 0.5 km²) is in the city; its figures are the grid cell at its center; frost dates are the nearest record's medians of 32°F.