Castle Hill gets about 98 inches of snow a winter, more than 97% of U.S. towns
A typical July afternoon reaches 77°, a January night drops to 1°, and about 98 inches of snow falls in a normal winter.
A year in Castle Hill at a glance
Each month’s typical high and low, and what it brings.
What stands out about Castle Hill’s climate
Compared with towns across the U.S., with Castle Hill’s place in Maine beside it.
What a year in Castle Hill feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 131 frost-free days a year
In half of years the last 32° night comes by May 14 and the first by September 26. Frost and day counts come from NOAA’s station at Presque Isle, ME, 11 miles from the town’s center, at about the same height.
The 2023 USDA map puts Castle Hill’s center in zone 4b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −25°. 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 98 inches of snow a winter
Snow, measured at Presque Isle, ME, falls mostly in January, February and December. Precipitation (rain plus melted snow) adds up to 41 inches a year; October is the wettest month and February the driest. Rain or snow falls on about 137 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Castle Hill
97% 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 Presque Isle, ME.
Living with Castle Hill’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
131 frost-free days in zone 4b. The last frost comes by May 14 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 26.
Months with highs of 62–84° and lows of 40° or more: June, July, August and September. 21 miles of trails are waiting.
Parks & trails →Cold waves are 49% of the yearly building losses FEMA expects in Castle Hill from natural hazards, the largest share. Normals are averages; the hazards page covers the extremes.
Natural hazards →Castle Hill and its neighbors
Every town next door is within a degree of Castle Hill in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Castle Hill’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 |
|---|---|---|---|---|
| Castle Hill, ME | 1° | 77° | 41" | 98" |
| Tupper Lake, NY | 5° | 78° | 43" | 105" |
| Berlin, NH | 5° | 77° | 45" | 82" |
| Minocqua, WI | 3° | 77° | 33" | 99" |
| St. Johnsbury, VT | 5° | 79° | 41" | 87" |
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 Castle Hill averaged 1.6° warmer than the 1900s. The biggest change is in December (+3.6°).
A bigger shift than in 64% 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 Castle Hill compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Castle Hill’s place among Maine’s.
Castle Hill weather by month
Highs, lows and precipitation from NOAA’s grid at Castle Hill’s center; snow, wet days and snow on the ground from Presque Isle, ME. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 21° | 1° | 2.9" | 21.1" | 11 | 30 | −1° – 18° |
| February | 24° | 2° | 2.3" | 21.7" | 8 | 28 | 2° – 22° |
| March | 34° | 13° | 2.7" | 19.0" | 10 | 27 | 15° – 31° |
| April | 47° | 27° | 3.0" | 6.3" | 12 | 10 | 32° – 43° |
| May | 63° | 39° | 3.4" | 0.2" | 13 | 0 | 46° – 56° |
| June | 72° | 49° | 4.1" | 0.0" | 13 | 0 | 56° – 64° |
| July | 77° | 55° | 4.2" | 0.0" | 14 | 0 | 59° – 70° |
| August | 75° | 52° | 3.7" | 0.0" | 12 | 0 | 60° – 67° |
| September | 67° | 44° | 3.6" | 0.2" | 10 | 0 | 50° – 61° |
| October | 53° | 34° | 4.2" | 1.2" | 13 | 0 | 39° – 50° |
| November | 39° | 24° | 3.3" | 6.1" | 11 | 5 | 26° – 37° |
| December | 27° | 11° | 3.6" | 21.7" | 11 | 23 | 12° – 27° |
| Year | 50° | 29° | 40.9" | 97.5" | 137 | 122 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 2° to 22°. August is the most reliable, staying within 7°.
Where Castle Hill’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 Castle Hill’s center.
- Snow: Presque Isle, ME.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Presque Isle, ME, 11 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 Castle Hill’s climate
What is the weather like in Castle Hill?
A typical July afternoon reaches 77°, a January night drops to 1°, and about 98 inches of snow falls in a normal winter. Colder January nights than all but 56 U.S. towns; cooler July afternoons than 97% of U.S. towns.
How cold does it get in Castle Hill in winter?
January nights average 1°. About 176 nights a year reach 32° or below and 35 reach 0° or below. In the coldest January of the last 30 years the month averaged −1°.
How much snow does Castle Hill get?
About 98 inches in a normal winter at Presque Isle, ME, most of it in January, February and December, with snow on the ground about 122 days a year.
How hot does it get in Castle Hill?
July, with a typical high of 77° and a low of 55°. About 2 days a year reach 90° (Presque Isle, ME).
When is the first and last frost in Castle Hill?
In half of years the last spring frost (32°) comes by May 14 and the first fall frost by September 26, about 131 frost-free days, at Presque Isle, ME.
What growing zone is Castle Hill in?
Zone 4b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −25°.
What is the best time of year to visit Castle Hill?
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 Castle Hill getting warmer?
Yes: 1991–2020 averaged 1.6° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 64% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Castle Hill.
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.