Photo: John Phelan · CC BY-SA 4.0Lyman gets about 81 inches of snow a winter, more than 95% of U.S. towns
The warmest part of a July day comes in at 81° on average. By July afternoons alone, it runs cooler than 86% of U.S. towns. Since 1901–2000, the year has warmed by 1.7°, most of all in December. Picnics, hikes and garden evenings come into their own from May to September, with highs of 67–81°.
A year in Lyman at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lyman’s climate
Compared with towns across the U.S., with Lyman’s place in Maine beside it.
What a year in Lyman feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 136 frost-free days a year
In half of years the last 32° night comes by May 16 and the first by September 30. Frost and day counts come from NOAA’s station at Sanford 2 Nnw, ME, 7 miles from the town’s center, at about the same height.
The 2023 USDA map puts Lyman’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −14°. 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 81 inches of snow a winter
Snow, measured at Hollis, ME, is heaviest from January through February, about 20 inches a month. Precipitation (rain plus melted snow) adds up to 50 inches a year; October is the wettest month and February the driest. Rain or snow falls on about 138 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Lyman
95% 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 Sanford 2 Nnw, ME.
Living with Lyman’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
136 frost-free days in zone 5b. The last frost comes by May 16 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 30.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 39 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Lyman from natural hazards, river flooding is the largest share (47%); heat waves, cold waves, winter storms and ice storms together are 13%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lyman and its neighbors
Waterboro has the coldest January nights next door (11°, 1° colder). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Lyman’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 |
|---|---|---|---|---|
| Lyman, ME | 13° | 81° | 50" | 81" |
| Woodstock, NY | 15° | 82° | 51" | 86" |
| Lee, MA | 14° | 82° | 46" | 77" |
| Torrington, CT | 15° | 81° | 51" | 59" |
| Bradford, PA | 15° | 80° | 44" | 75" |
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 Lyman averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.3°).
A bigger shift than in 70% 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 Lyman compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lyman’s place among Maine’s.
Lyman weather by month
Highs, lows and precipitation from NOAA’s grid at Lyman’s center; snow, wet days and snow on the ground from Hollis, ME. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 32° | 13° | 3.5" | 19.8" | 12 | 29 | 13° – 30° |
| February | 35° | 14° | 3.4" | 20.4" | 10 | 28 | 10° – 31° |
| March | 43° | 23° | 4.4" | 15.4" | 11 | 24 | 25° – 40° |
| April | 56° | 33° | 4.5" | 3.7" | 12 | 6 | 41° – 49° |
| May | 67° | 43° | 3.8" | 0.1" | 14 | 0 | 50° – 60° |
| June | 76° | 53° | 4.4" | 0.0" | 14 | 0 | 61° – 68° |
| July | 81° | 59° | 3.8" | 0.0" | 12 | 0 | 66° – 73° |
| August | 80° | 57° | 3.7" | 0.0" | 10 | 0 | 66° – 71° |
| September | 72° | 49° | 3.9" | 0.0" | 9 | 0 | 56° – 64° |
| October | 59° | 38° | 5.2" | 0.4" | 12 | 0 | 45° – 55° |
| November | 48° | 29° | 4.4" | 3.4" | 12 | 3 | 33° – 43° |
| December | 37° | 20° | 4.6" | 17.7" | 12 | 19 | 22° – 36° |
| Year | 57° | 36° | 49.6" | 80.9" | 138 | 109 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 10° to 31°. August is the most reliable, staying within 6°.
Where Lyman’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 Lyman’s center.
- Snow: Hollis, ME.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Sanford 2 Nnw, ME, 7 miles from the town’s center, at about the same height; 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 Lyman’s climate
What is the weather like in Lyman?
A typical July afternoon reaches 81°, a January night drops to 13°, and about 81 inches of snow falls in a normal winter. Colder January nights than 90% of U.S. towns; cooler July afternoons than 86% of U.S. towns.
How cold does it get in Lyman in winter?
January nights average 13°. About 156 nights a year reach 32° or below and 11 reach 0° or below. In the coldest January of the last 30 years the month averaged 13°.
How much snow does Lyman get?
About 81 inches in a normal winter at Hollis, ME, heaviest from January through February, about 20 inches a month, with snow on the ground about 109 days a year.
How hot does it get in Lyman?
July, with a typical high of 81° and a low of 59°. About 10 days a year reach 90° (Sanford 2 Nnw, ME).
When is the first and last frost in Lyman?
In half of years the last spring frost (32°) comes by May 16 and the first fall frost by September 30, about 136 frost-free days, at Sanford 2 Nnw, ME.
What growing zone is Lyman in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −14°.
What is the best time of year to visit Lyman?
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 Lyman getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 70% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lyman.
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.