Photo: Dmoore5556 · CC BY-SA 4.0Clarksville gets about 143 inches of snow a winter, more than all but 70 U.S. towns
Expect July afternoons of about 75°. Summers stay cool: July afternoons here are cooler than in 98% of U.S. towns. Compared with 1901–2000, the average now sits 1.6° higher. Plan time outside from June to September, when highs sit at 66–75°.
A year in Clarksville at a glance
Each month’s typical high and low, and what it brings.
What stands out about Clarksville’s climate
Compared with towns across the U.S., with Clarksville’s place in New Hampshire beside it.
What a year in Clarksville feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 121 frost-free days a year
In half of years the last 32° night comes by May 25 and the first by September 24. Frost and day counts come from NOAA’s station at First Connecticut Lake, NH, 5 miles from the town’s center, 170 ft lower.
The 2023 USDA map puts Clarksville’s center in zone 4a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −27°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
About 143 inches of snow a winter
Snow, measured at First Connecticut Lake, NH, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 45 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 185 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Clarksville
99% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at First Connecticut Lake, NH.
Living with Clarksville’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
121 frost-free days in zone 4a. The last frost comes by May 25 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 24.
Months with highs of 62–84° and lows of 40° or more: June, July, August and September. 73 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Clarksville from natural hazards, avalanches are the largest share (77%); heat waves, cold waves, winter storms and ice storms together are 6%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Clarksville and its neighbors
Beecher Falls the hottest July afternoons (77°, 1° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Clarksville’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 |
|---|---|---|---|---|
| Clarksville, NH | 3° | 75° | 45" | 143" |
| Caribou, ME | 2° | 77° | 41" | 118" |
| Harrietstown, NY | 5° | 75° | 46" | 104" |
| Sault Ste. Marie, MI | 8° | 76° | 37" | 120" |
| Minocqua, WI | 3° | 77° | 33" | 99" |
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 Clarksville averaged 1.6° warmer than the 1900s. The biggest change is in December (+4.1°).
A bigger shift than in 66% 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 Clarksville compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Clarksville’s place among New Hampshire’s.
Clarksville weather by month
Highs, lows and precipitation from NOAA’s grid at Clarksville’s center; snow, wet days and snow on the ground from First Connecticut Lake, NH. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 23° | 3° | 3.2" | 30.3" | 18 | 31 | 2° – 23° |
| February | 26° | 5° | 2.6" | 28.4" | 15 | 29 | 1° – 23° |
| March | 35° | 14° | 2.9" | 24.6" | 15 | 31 | 14° – 34° |
| April | 48° | 27° | 3.5" | 9.7" | 15 | 23 | 33° – 44° |
| May | 62° | 39° | 4.0" | 1.0" | 15 | 2 | 44° – 56° |
| June | 71° | 49° | 4.8" | 0.0" | 15 | 0 | 57° – 65° |
| July | 75° | 54° | 4.6" | 0.0" | 15 | 0 | 60° – 68° |
| August | 74° | 52° | 4.4" | 0.0" | 14 | 0 | 60° – 66° |
| September | 66° | 44° | 3.8" | 0.0" | 12 | 0 | 50° – 60° |
| October | 53° | 35° | 4.4" | 2.5" | 16 | 2 | 39° – 51° |
| November | 40° | 25° | 3.3" | 14.6" | 17 | 14 | 27° – 38° |
| December | 29° | 13° | 3.6" | 31.9" | 19 | 29 | 13° – 32° |
| Year | 50° | 30° | 45.0" | 143.0" | 185 | 159 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 1° to 23°. August is the most reliable, staying within 6°.
Where Clarksville’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 Clarksville’s center.
- Snow: First Connecticut Lake, NH.
- Frost, freezing nights, 90° and 100° days, heating and cooling: First Connecticut Lake, NH, 5 miles from the town’s center, 170 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 Clarksville’s climate
What is the weather like in Clarksville?
A typical July afternoon reaches 75°, a January night drops to 3°, and about 143 inches of snow falls in a normal winter. Colder January nights than all but 133 U.S. towns; cooler July afternoons than 98% of U.S. towns.
How cold does it get in Clarksville in winter?
January nights average 3°. About 198 nights a year reach 32° or below and 51 reach 0° or below. In the coldest January of the last 30 years the month averaged 2°.
How much snow does Clarksville get?
About 143 inches in a normal winter at First Connecticut Lake, NH, most of it in January and December, with snow on the ground about 159 days a year.
How hot does it get in Clarksville?
July, with a typical high of 75°. 90° days are rare: none in a normal year at First Connecticut Lake, NH.
When is the first and last frost in Clarksville?
In half of years the last spring frost (32°) comes by May 25 and the first fall frost by September 24, about 121 frost-free days, at First Connecticut Lake, NH.
What growing zone is Clarksville in?
Zone 4a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −27°.
What is the best time of year to visit Clarksville?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Clarksville getting warmer?
Yes: 1991–2020 averaged 1.6° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 66% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Clarksville.
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.