Hampton, Connecticut climate: Climate normals at a NOAA weather station
Hampton's normal year runs from 17°F January nights to 80°F July afternoons, with 50.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.2°C, January lows of −8°C, July highs of 27°C, 1,286 mm of precipitation a year.
- NOAA stationHampton
- Station IDUSC00063420
- Location41.77°N 72.05°W
- Elevation490 ft (149 m)
On October 22, the normal high in Hampton is 60°F and the normal low 38°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Hampton.
- Jan 36° 17°
- Feb 38° 18°
- Mar 46° 25°
- Apr 58° 35°
- May 68° 45°
- Jun 75° 54°
- Jul 80° 60°
- Aug 79° 58°
- Sep 73° 51°
- Oct 62° 40°
- Nov 51° 31°
- Dec 41° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Hampton each month?
July is the warmest month, with normal highs of 80°F; January the coldest, with normal lows of 17°F. The most precipitation falls in December (4.78 in), the least in February (3.37 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 36°F | 17°F | 26.8°F | 4.05 | – | <1 | 28 | 9 h 30 min |
| February | 38°F | 18°F | 28.1°F | 3.37 | – | <1 | 26 | 10 h 30 min |
| March | 46°F | 25°F | 35.6°F | 4.44 | – | <1 | 25 | 11 h 50 min |
| April | 58°F | 35°F | 46.1°F | 4.67 | – | <1 | 12 | 13 h 20 min |
| May | 68°F | 45°F | 56.3°F | 3.74 | – | <1 | 1 | 14 h 30 min |
| June | 75°F | 54°F | 64.9°F | 4.32 | – | <1 | <1 | 15 h 10 min |
| July | 80°F | 60°F | 70.2°F | 3.91 | – | 1 | <1 | 15 h |
| August | 79°F | 58°F | 68.5°F | 4.21 | – | 1 | <1 | 13 h 50 min |
| September | 73°F | 51°F | 62.0°F | 4.31 | – | <1 | <1 | 12 h 30 min |
| October | 62°F | 40°F | 51.0°F | 4.73 | – | <1 | 6 | 11 h 10 min |
| November | 51°F | 31°F | 41.1°F | 4.11 | – | <1 | 18 | 9 h 50 min |
| December | 41°F | 23°F | 32.0°F | 4.78 | – | <1 | 26 | 9 h 10 min |
| Year (annual) | 59°F | 38°F | 48.6°F | 50.64 | – | 3 | 142 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 2°C | −8°C | −2.9°C | 103 mm |
| February | 3°C | −8°C | −2.2°C | 86 mm |
| March | 8°C | −4°C | 2.0°C | 113 mm |
| April | 14°C | 1°C | 7.8°C | 119 mm |
| May | 20°C | 7°C | 13.5°C | 95 mm |
| June | 24°C | 12°C | 18.3°C | 110 mm |
| July | 27°C | 16°C | 21.2°C | 99 mm |
| August | 26°C | 14°C | 20.3°C | 107 mm |
| September | 23°C | 11°C | 16.7°C | 109 mm |
| October | 17°C | 5°C | 10.6°C | 120 mm |
| November | 11°C | −1°C | 5.1°C | 104 mm |
| December | 5°C | −5°C | 0.0°C | 121 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Storrs (9 miles away), gets 39 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00063420; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Hampton?
Normal highs sit between 65°F and 85°F in May, June, July, August and September.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00063420.
When is the last frost at Hampton?
In Hampton, the last spring frost (32°F) comes after April 30 in half of years and after May 11 in one year in ten; the first autumn frost comes before October 15 in half of years and before October 1 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 301 year in 10 after May 11; 9 in 10 after April 18
- First autumn frost, half of years before
- October 151 year in 10 before October 1; 9 in 10 before October 29
NOAA puts the median frost-free season at 167 days, and the season without a hard freeze (28°F) at 193 days.
A hard freeze (28°F) comes after April 16 in half of springs and before October 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Hampton in zone 6b in ZIP code 06247, the nearest ZIP area.
Frost dates for every NOAA station in Connecticut · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00063420; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Hampton?
In a normal year in Hampton, 3 days a year reach 90°F and 142 nights fall to 32°F or colder.
- Days at 90°F or more
- 3a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 142a normal year
- Days that stay below freezing
- 30high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00063420.
How sunny is it at Hampton?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds at Hampton, 3.9 kWh per square metre a day. July is the sunniest month (79%) and December the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 1.9 |
| February | 70% | 2.7 |
| March | 69% | 3.7 |
| April | 71% | 4.9 |
| May | 70% | 5.5 |
| June | 74% | 5.9 |
| July | 79% | 6.0 |
| August | 79% | 5.3 |
| September | 78% | 4.4 |
| October | 71% | 2.9 |
| November | 72% | 2.1 |
| December | 67% | 1.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Hampton record?
A normal year at Hampton brings 6,396 heating degree days, 19% more than the median U.S. place (5,373), and 436 cooling degree days, 52% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,427 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,184 | 0 |
| February | 1,032 | 0 |
| March | 910 | 0 |
| April | 569 | 2 |
| May | 280 | 12 |
| June | 74 | 71 |
| July | 11 | 172 |
| August | 22 | 129 |
| September | 138 | 47 |
| October | 437 | 3 |
| November | 717 | 0 |
| December | 1,021 | 0 |
| Year (annual) | 6,396 | 436 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00063420. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at Hampton been warmer than normal?
2025 averaged 49.0°F, 0.4°F above the 1991-2020 normal of 48.6°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 50.0°F | +1.4°F | 52.36 |
| 2022 | 49.9°F | +1.3°F | 49.03 |
| 2024 | 50.6°F | +2.0°F | 58.26 |
| 2025 | 49.0°F | +0.4°F | 47.25 |
Source: observed years: ACIS, station USC00063420. A year counts only with all twelve months complete.
How does Hampton's climate compare?
Hampton is warmer than 2 of the 13 places with their own NOAA record in Connecticut, and wetter than 9. Across the 7,247 U.S. stations with normals, its annual mean of 48.6°F is warmer than 34%.
In the Köppen classification computed from these normals, Hampton is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Hampton share this climate record?
Greene has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Greene, RI1,009 people · 17 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Hampton's climate
What is the coldest month at Hampton?
January, with a normal high of 36°F and a normal low of 17°F. The warmest is July (80°F by day, 60°F at night).
Does it snow at Hampton?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Storrs (9 miles away), records 39 inches of snow in a normal year.
What is the rainiest month at Hampton?
December, with 4.78 in of precipitation in a normal year; the driest is February with 3.37 in.
What plant hardiness zone is Hampton in?
The USDA's 2023 map puts Hampton in zone 6b in ZIP code 06247, the nearest ZIP area.
How late can frost come at Hampton?
In half of years the last 32°F night comes after April 30; in one year in ten it comes after May 11. Waiting until May 11 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Connecticut climateThe statewide normals and every place in the state
- Willimantic, CT7 miles from this station, 49.9°F a year
- Storrs, CT9 miles from this station, 49.6°F a year
- West Thompson Lake, CT14 miles from this station, 48.2°F a year
- Norwich, CT17 miles from this station, 51.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made