Jackman, Maine climate: Climate normals at a NOAA weather station
Jackman's normal year runs from 0°F January nights to 77°F July afternoons, with 41.8 inches of precipitation and 107 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 4.0°C, January lows of −18°C, July highs of 25°C, 1,061 mm of precipitation a year.
- NOAA stationJackman
- Station IDUSC00174086
- Location45.63°N 70.25°W
- Elevation1,214 ft (370 m)
On October 24, the normal high in Jackman is 50°F and the normal low 30°F, and the chance of measurable rain or snow is 44%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Jackman.
- Jan 22° 0°
- Feb 26° 0°
- Mar 35° 11°
- Apr 48° 25°
- May 63° 37°
- Jun 72° 48°
- Jul 77° 53°
- Aug 76° 51°
- Sep 69° 43°
- Oct 54° 32°
- Nov 41° 22°
- Dec 29° 10°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Jackman each month?
July is the warmest month, with normal highs of 77°F; January the coldest, with normal lows of 0°F. The most precipitation falls in June (4.64 in), the least in February (2.31 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 22°F | 0°F | 11.2°F | 2.54 | 21.5 | 12 | <1 | 31 | 9 h |
| February | 26°F | 0°F | 13.1°F | 2.31 | 25.2 | 10 | <1 | 28 | 10 h 20 min |
| March | 35°F | 11°F | 22.9°F | 2.56 | 19.4 | 11 | <1 | 30 | 11 h 50 min |
| April | 48°F | 25°F | 36.4°F | 3.25 | 7.6 | 12 | <1 | 25 | 13 h 30 min |
| May | 63°F | 37°F | 50.0°F | 3.67 | 0.2 | 14 | <1 | 8 | 14 h 50 min |
| June | 72°F | 48°F | 59.8°F | 4.64 | 0.0 | 14 | <1 | <1 | 15 h 40 min |
| July | 77°F | 53°F | 64.8°F | 4.57 | 0.0 | 14 | <1 | <1 | 15 h 20 min |
| August | 76°F | 51°F | 63.4°F | 4.00 | 0.0 | 13 | <1 | <1 | 14 h 10 min |
| September | 69°F | 43°F | 55.6°F | 3.46 | 0.0 | 11 | <1 | 3 | 12 h 40 min |
| October | 54°F | 32°F | 43.1°F | 4.28 | 1.6 | 14 | <1 | 15 | 11 h |
| November | 41°F | 22°F | 31.5°F | 3.07 | 7.2 | 13 | <1 | 26 | 9 h 30 min |
| December | 29°F | 10°F | 19.1°F | 3.42 | 24.2 | 15 | <1 | 30 | 8 h 40 min |
| Year (annual) | 51°F | 28°F | 39.2°F | 41.77 | 106.9 | 151 | 1 | 197 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −5°C | −18°C | −11.6°C | 65 mm | 55 cm |
| February | −4°C | −18°C | −10.5°C | 59 mm | 64 cm |
| March | 2°C | −12°C | −5.1°C | 65 mm | 49 cm |
| April | 9°C | −4°C | 2.4°C | 83 mm | 19 cm |
| May | 17°C | 3°C | 10.0°C | 93 mm | 1 cm |
| June | 22°C | 9°C | 15.4°C | 118 mm | 0 cm |
| July | 25°C | 12°C | 18.2°C | 116 mm | 0 cm |
| August | 24°C | 11°C | 17.4°C | 102 mm | 0 cm |
| September | 20°C | 6°C | 13.1°C | 88 mm | 0 cm |
| October | 12°C | 0°C | 6.2°C | 109 mm | 4 cm |
| November | 5°C | −5°C | −0.3°C | 78 mm | 18 cm |
| December | −2°C | −12°C | −7.2°C | 87 mm | 61 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00174086; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Jackman?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, September has the fewest days with rain (11).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00174086.
When is the last frost at Jackman?
In Jackman, the last spring frost (32°F) comes after May 26 in half of years and after June 7 in one year in ten; the first autumn frost comes before September 23 in half of years and before September 8 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 261 year in 10 after June 7; 9 in 10 after May 10
- First autumn frost, half of years before
- September 231 year in 10 before September 8; 9 in 10 before October 5
NOAA puts the median frost-free season at 119 days, and the season without a hard freeze (28°F) at 143 days.
A hard freeze (28°F) comes after May 11 in half of springs and before October 3 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Jackman in zone 4b in ZIP code 04945, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 4b: the coldest night of a typical year reaches −25°F (30 complete years).
Frost dates for every NOAA station in Maine · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00174086; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Jackman?
In a normal year in Jackman, 1 day a year reaches 90°F, 197 nights fall to 32°F or colder and 151 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 197a normal year
- Days that stay below freezing
- 87high of 32°F or less
- Days with 0.01 inch of precipitation
- 151a normal year
- Days with 1 inch of snow or more
- 35a normal year
The highest temperature in this station's record (since 1897) is 102°F, on July 5, 1897; the lowest is −44°F, on February 2, 1962.
The wettest calendar year on that record is 2008, with 54.19 in; the snowiest season is 2007–08, with 162.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00174086; records: ACIS (NOAA Regional Climate Centers), station USC00174086. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Jackman?
Over a year 66% of the sunlight that would reach the ground under clear skies gets through the clouds at Jackman, 3.4 kWh per square metre a day. September is the sunniest month (72%) and December the cloudiest (51%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 59% | 1.4 |
| February | 62% | 2.2 |
| March | 65% | 3.4 |
| April | 65% | 4.4 |
| May | 64% | 5.0 |
| June | 67% | 5.5 |
| July | 71% | 5.5 |
| August | 72% | 4.9 |
| September | 72% | 3.9 |
| October | 60% | 2.3 |
| November | 56% | 1.4 |
| December | 51% | 1.0 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Jackman record?
A normal year at Jackman brings 9,508 heating degree days, 77% more than the median U.S. place (5,373), and 156 cooling degree days, 83% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,507 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,668 | 0 |
| February | 1,455 | 0 |
| March | 1,305 | 0 |
| April | 857 | 0 |
| May | 471 | 4 |
| June | 185 | 28 |
| July | 73 | 67 |
| August | 95 | 44 |
| September | 296 | 13 |
| October | 678 | 0 |
| November | 1,004 | 0 |
| December | 1,423 | 0 |
| Year (annual) | 9,508 | 156 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00174086. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at Jackman been warmer than normal?
2025 averaged 40.2°F, 1.0°F above the 1991-2020 normal of 39.2°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 41.2°F | +2.0°F | 27.82 | 69.6 |
| 2022 | 40.9°F | +1.7°F | 47.64 | 86.5 |
| 2023 | 42.2°F | +3.0°F | 46.01 | 86.6 |
| 2024 | 42.9°F | +3.7°F | 35.89 | 82.6 |
| 2025 | 40.2°F | +1.0°F | 31.52 | 86.6 |
Over 56 complete years from 1957 to 2025, the station's annual mean temperature rose at a fitted 4.9°F per century (+0.27°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00174086; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Jackman's climate compare?
Jackman is warmer than 3 of the 42 places with their own NOAA record in Maine, and wetter than 7. Across the 7,247 U.S. stations with normals, its annual mean of 39.2°F is warmer than 4%.
In the Köppen classification computed from these normals, Jackman is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about Jackman's climate
What is the coldest month at Jackman?
January, with a normal high of 22°F and a normal low of 0°F. The warmest is July (77°F by day, 53°F at night).
Does it snow at Jackman?
Yes: 107 inches in a normal year, falling on 40 days with 0.1 inch or more, the most in February (25.2 inches).
What is the rainiest month at Jackman?
June, with 4.64 in of precipitation in a normal year; the driest is February with 2.31 in.
What plant hardiness zone is Jackman in?
The USDA's 2023 map puts Jackman in zone 4b in ZIP code 04945, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −25°F (30 years, 1991-2020): zone 4b.
How late can frost come at Jackman?
In half of years the last 32°F night comes after May 26; in one year in ten it comes after June 7. Waiting until June 7 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maine climateThe statewide normals and every place in the state
- Brassua Dam, ME21 miles from this station, 39.6°F a year
- Pittston Farm, ME23 miles from this station, 38.8°F a year
- Moosehead, ME25 miles from this station, 40.1°F a year
- Long Falls Dam, ME28 miles from this station, 40.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made