Photo: Wesman83 · CC BY-SA 3.0Plaistow has colder winter nights than 81% of U.S. towns
Midsummer highs settle at about 83°. The seasons are far apart: from a winter night to a summer afternoon the average spans 67°. Summers stay cool: July afternoons here are cooler than in 72% of U.S. towns. Long walks are most pleasant from May to September, when afternoons reach 69–83°.
A year in Plaistow at a glance
Each month’s typical high and low, and what it brings.
What stands out about Plaistow’s climate
Compared with towns across the U.S., with Plaistow’s place in New Hampshire beside it.
What a year in Plaistow feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 163 frost-free days a year
In half of years the last 32° night comes by May 1 and the first by October 12. Frost and day counts come from NOAA’s station at Haverhill, MA, 6 miles from the town’s center, 110 ft lower.
The 2023 USDA map puts Plaistow’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −5°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 58 inches of snow a winter
Snow, measured at Haverhill, MA, is heaviest from January through February, about 16 inches a month. Precipitation (rain plus melted snow) adds up to 47 inches a year; October is the wettest month and February the driest. Rain or snow falls on about 131 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Plaistow
92% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Haverhill, MA.
Living with Plaistow’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
163 frost-free days in zone 6a. The last frost comes by May 1 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 12.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 15 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Plaistow from natural hazards, river flooding is the largest share (62%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Plaistow and its neighbors
Every town next door is within a degree of Plaistow in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Plaistow’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Plaistow, NH | 16° | 83° | 47" | 58" |
| Pawling, NY | 17° | 83° | 47" | 58" |
| Oil City, PA | 18° | 83° | 45" | 54" |
| New Fairfield, CT | 17° | 83° | 50" | 49" |
| Cortland, OH | 18° | 83° | 43" | 68" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Plaistow averaged 1.8° warmer than the 1900s. The biggest change is in December (+3.6°).
A bigger shift than in 77% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Plaistow compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Plaistow’s place among New Hampshire’s.
Plaistow weather by month
Highs, lows and precipitation from NOAA’s grid at Plaistow’s center; snow, wet days and snow on the ground from Haverhill, MA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 34° | 16° | 3.3" | 16.2" | 11 | 16° – 32° |
| February | 37° | 17° | 3.2" | 15.6" | 10 | 13° – 33° |
| March | 45° | 25° | 4.2" | 11.9" | 11 | 28° – 44° |
| April | 58° | 35° | 4.1" | 1.8" | 12 | 43° – 51° |
| May | 69° | 45° | 3.7" | 0.0" | 13 | 52° – 62° |
| June | 77° | 55° | 4.2" | 0.0" | 11 | 62° – 69° |
| July | 83° | 61° | 3.7" | 0.0" | 10 | 67° – 75° |
| August | 81° | 59° | 3.5" | 0.0" | 9 | 67° – 73° |
| September | 74° | 51° | 3.8" | 0.0" | 9 | 59° – 66° |
| October | 62° | 40° | 4.7" | 0.1" | 12 | 47° – 57° |
| November | 50° | 31° | 3.8" | 1.4" | 11 | 36° – 45° |
| December | 40° | 22° | 4.3" | 10.8" | 12 | 25° – 40° |
| Year | 59° | 38° | 46.5" | 57.8" | 131 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 13° to 33°. August is the most reliable, staying within 6°.
Where Plaistow’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Plaistow’s center.
- Snow: Haverhill, MA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Haverhill, MA, 6 miles from the town’s center, 110 ft lower; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Plaistow’s climate
What is the weather like in Plaistow?
A typical July afternoon reaches 83°, a January night drops to 16°, and about 58 inches of snow falls in a normal winter. Colder January nights than 81% of U.S. towns; cooler July afternoons than 72% of U.S. towns.
How cold does it get in Plaistow in winter?
January nights average 16°. About 143 nights a year reach 32° or below and 4 reach 0° or below. In the coldest January of the last 30 years the month averaged 16°.
How much snow does Plaistow get?
About 58 inches in a normal winter at Haverhill, MA, heaviest from January through February, about 16 inches a month.
How hot does it get in Plaistow?
July, with a typical high of 83° and a low of 61°. About 13 days a year reach 90° (Haverhill, MA).
When is the first and last frost in Plaistow?
In half of years the last spring frost (32°) comes by May 1 and the first fall frost by October 12, about 163 frost-free days, at Haverhill, MA.
What growing zone is Plaistow in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −5°.
What is the best time of year to visit Plaistow?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Plaistow getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 77% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Plaistow.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.