New Haven weather in January: New Haven, Connecticut: normal highs, lows, rain and records for January
New Haven in January has a normal high of 38°F and a normal low of 23°F, a daily mean of 31°F, falling from 40°F on the 1st to 38°F by the 31st. Measurable precipitation falls on 10 days in a normal January, 2.72 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 3°C and low of −5°C, 69 mm of precipitation in January.
- NOAA stationNew Haven Tweed Airport
- Station IDUSW00014758
- Location41.26°N 72.89°W
- Elevation3 ft (1 m)
- From the center4 miles
- Population137,562
- Jan 38° 23°
- Feb 40° 24°
- Mar 47° 30°
- Apr 58° 39°
- May 68° 49°
- Jun 76° 59°
- Jul 82° 66°
- Aug 81° 65°
- Sep 75° 57°
- Oct 64° 46°
- Nov 53° 36°
- Dec 44° 29°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is New Haven in January?
The normal high is 38°F and the normal low 23°F, for a daily mean of 30.5°F. January is 5.8°F cooler than December and 1.5°F cooler than February. January is the 12th warmest month of the year in New Haven and the 12th wettest. Across the month the normal high falls 2°F, from 40°F on January 1 to 38°F on January 31. From one year to the next January's mean temperature typically moves about 4.0°F either way (NOAA's standard deviation), so roughly two Januarys in three average between 27°F and 35°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| January 1 | 40°F | 25°F | 34% | 20% |
| January 8 | 38°F | 24°F | 33% | 19% |
| January 15 | 38°F | 23°F | 32% | 18% |
| January 22 | 38°F | 22°F | 30% | 17% |
| January 31 | 38°F | 22°F | 29% | 18% |
Every day of January: normal high, low and chance of precipitation (warmest afternoon January 1, coldest night January 24)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| January 1 | 40°F | 25°F | 34% | 20% | 9 h 10 min |
| January 2 | 39°F | 25°F | 34% | 20% | 9 h 20 min |
| January 3 | 39°F | 25°F | 34% | 20% | 9 h 20 min |
| January 4 | 39°F | 25°F | 34% | 20% | 9 h 20 min |
| January 5 | 39°F | 24°F | 34% | 19% | 9 h 20 min |
| January 6 | 39°F | 24°F | 34% | 19% | 9 h 20 min |
| January 7 | 39°F | 24°F | 33% | 19% | 9 h 20 min |
| January 8 | 38°F | 24°F | 33% | 19% | 9 h 20 min |
| January 9 | 38°F | 24°F | 33% | 19% | 9 h 20 min |
| January 10 | 38°F | 23°F | 33% | 19% | 9 h 20 min |
| January 11 | 38°F | 23°F | 33% | 19% | 9 h 20 min |
| January 12 | 38°F | 23°F | 33% | 18% | 9 h 30 min |
| January 13 | 38°F | 23°F | 32% | 18% | 9 h 30 min |
| January 14 | 38°F | 23°F | 32% | 18% | 9 h 30 min |
| January 15 | 38°F | 23°F | 32% | 18% | 9 h 30 min |
| January 16 | 38°F | 23°F | 32% | 18% | 9 h 30 min |
| January 17 | 38°F | 23°F | 31% | 18% | 9 h 30 min |
| January 18 | 38°F | 22°F | 31% | 18% | 9 h 40 min |
| January 19 | 38°F | 22°F | 31% | 18% | 9 h 40 min |
| January 20 | 38°F | 22°F | 30% | 18% | 9 h 40 min |
| January 21 | 38°F | 22°F | 30% | 17% | 9 h 40 min |
| January 22 | 38°F | 22°F | 30% | 17% | 9 h 40 min |
| January 23 | 38°F | 22°F | 30% | 17% | 9 h 40 min |
| January 24 | 38°F | 22°F | 29% | 17% | 9 h 50 min |
| January 25 | 38°F | 22°F | 29% | 17% | 9 h 50 min |
| January 26 | 38°F | 22°F | 29% | 17% | 9 h 50 min |
| January 27 | 38°F | 22°F | 29% | 17% | 9 h 50 min |
| January 28 | 38°F | 22°F | 29% | 17% | 9 h 50 min |
| January 29 | 38°F | 22°F | 29% | 17% | 10 h |
| January 30 | 38°F | 22°F | 29% | 18% | 10 h |
| January 31 | 38°F | 22°F | 29% | 18% | 10 h |
- Normal high
- 38°FJanuary average
- Normal low
- 23°FJanuary average
- Precipitation
- 2.72 inmonth total
- Days with precipitation
- 100.01 inch or more
- Nights at 32°F or colder
- 25
- Daylight
- 9 h 10 min to 10 hJanuary 1 to January 31
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014758; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in New Haven in January?
On a given January day the chance of 0.01 inch or more is 31% on average, highest around January 1 (34%). In all, 2.72 in falls on 10 days of a normal January, 1 of them with an inch or more.
In a normal January in New Haven, 25 nights fall to freezing and 9 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014758.
What are the records for January in New Haven?
The warmest January temperature on this station's record (since 1948) is 69°F, on January 12, 2020; the coldest is −8°F, on January 19, 1948. The wettest January brought 8.35 in (1958); the snowiest, 28.2 inches (1948).
The January mean against the 1991-2020 normal of 30.5°F: 2021 33.0°F (+2.5), 2022 29.6°F (−0.9), 2023 41.4°F (+10.9), 2024 36.1°F (+5.6), 2025 31.4°F (+0.9), 2026 30.7°F (+0.2). 5 of 6 ran warmer than normal.
| January | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 33.0°F | +2.5°F | 1.21 in |
| 2022 | 29.6°F | −0.9°F | 2.36 in |
| 2023 | 41.4°F | +10.9°F | 2.12 in |
| 2024 | 36.1°F | +5.6°F | 5.39 in |
| 2025 | 31.4°F | +0.9°F | 0.73 in |
| 2026 | 30.7°F | +0.2°F | 1.50 in |
Source: records: ACIS, station USW00014758; recent months: ACIS, station USW00014758. Records and recent months use complete months only.
How does January in New Haven compare across Connecticut?
Across the 13 places PlainClimate covers in Connecticut, January normal highs run from 30°F in Norfolk to 38°F in Bridgeport; New Haven's is 38°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- New Haven in December44°F by day, 29°F at night
- New Haven in February40°F by day, 24°F at night
- New Haven through the yearEvery month, frost dates, records and recent years
- Connecticut in JanuaryThe statewide normal and the warmest and coolest places
- Bridgeport: Connecticut's warmest Januarynormal high 38°F