Sebec Lake, Maine climate: Climate normals at a NOAA weather station
Sebec Lake's normal year runs from 3°F January nights to 78°F July afternoons, with 48.5 inches of precipitation and 100 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.2°C, January lows of −16°C, July highs of 26°C, 1,231 mm of precipitation a year.
- NOAA stationSebec Lake
- Station IDUSC00177654
- Location45.25°N 69.23°W
- Elevation380 ft (116 m)
On October 23, the normal high in Sebec Lake is 53°F and the normal low 32°F, and the chance of measurable rain or snow is 39%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Sebec Lake.
- Jan 24° 3°
- Feb 28° 3°
- Mar 38° 14°
- Apr 51° 28°
- May 65° 39°
- Jun 73° 49°
- Jul 78° 55°
- Aug 77° 53°
- Sep 69° 45°
- Oct 56° 34°
- Nov 42° 26°
- Dec 30° 14°
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 Sebec Lake each month?
July is the warmest month, with normal highs of 78°F; January the coldest, with normal lows of 3°F. The most precipitation falls in October (5.15 in), the least in February (3.17 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 24°F | 3°F | 13.3°F | 3.57 | 22.9 | 12 | <1 | 31 | 9 h 10 min |
| February | 28°F | 3°F | 15.8°F | 3.17 | 23.0 | 10 | <1 | 28 | 10 h 20 min |
| March | 38°F | 14°F | 26.1°F | 3.63 | 21.6 | 12 | <1 | 30 | 11 h 50 min |
| April | 51°F | 28°F | 39.0°F | 4.01 | 7.3 | 11 | <1 | 25 | 13 h 30 min |
| May | 65°F | 39°F | 52.0°F | 3.75 | 0.0 | 14 | <1 | 9 | 14 h 50 min |
| June | 73°F | 49°F | 61.4°F | 4.44 | 0.0 | 14 | 1 | <1 | 15 h 40 min |
| July | 78°F | 55°F | 66.6°F | 4.00 | 0.0 | 14 | 1 | <1 | 15 h 20 min |
| August | 77°F | 53°F | 65.0°F | 3.82 | 0.0 | 12 | 2 | <1 | 14 h 10 min |
| September | 69°F | 45°F | 57.2°F | 4.03 | 0.0 | 11 | 1 | 2 | 12 h 40 min |
| October | 56°F | 34°F | 45.0°F | 5.15 | 0.6 | 12 | <1 | 15 | 11 h |
| November | 42°F | 26°F | 33.9°F | 4.39 | 4.9 | 13 | <1 | 25 | 9 h 30 min |
| December | 30°F | 14°F | 22.1°F | 4.50 | 20.0 | 13 | <1 | 30 | 8 h 50 min |
| Year (annual) | 53°F | 30°F | 41.4°F | 48.46 | 100.3 | 147 | 5 | 196 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −5°C | −16°C | −10.4°C | 91 mm | 58 cm |
| February | −2°C | −16°C | −9.0°C | 81 mm | 58 cm |
| March | 3°C | −10°C | −3.3°C | 92 mm | 55 cm |
| April | 10°C | −2°C | 3.9°C | 102 mm | 19 cm |
| May | 18°C | 4°C | 11.1°C | 95 mm | 0 cm |
| June | 23°C | 10°C | 16.3°C | 113 mm | 0 cm |
| July | 26°C | 13°C | 19.2°C | 102 mm | 0 cm |
| August | 25°C | 12°C | 18.3°C | 97 mm | 0 cm |
| September | 21°C | 7°C | 14.0°C | 102 mm | 0 cm |
| October | 13°C | 1°C | 7.2°C | 131 mm | 2 cm |
| November | 6°C | −4°C | 1.1°C | 112 mm | 12 cm |
| December | −1°C | −10°C | −5.5°C | 114 mm | 51 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00177654; 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 Sebec Lake?
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 USC00177654.
When is the last frost at Sebec Lake?
In Sebec Lake, the last spring frost (32°F) comes after May 16 in half of years and after June 1 in one year in ten; the first autumn frost comes before October 1 in half of years and before September 19 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 161 year in 10 after June 1; 9 in 10 after May 3
- First autumn frost, half of years before
- October 11 year in 10 before September 19; 9 in 10 before October 12
NOAA puts the median frost-free season at 135 days, and the season without a hard freeze (28°F) at 158 days.
A hard freeze (28°F) comes after May 3 in half of springs and before October 10 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Sebec Lake in zone 5a in ZIP code 04426, 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 −24°F (15 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Maine · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00177654; 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 Sebec Lake?
In a normal year in Sebec Lake, 5 days a year reach 90°F, 196 nights fall to 32°F or colder and 147 days bring measurable precipitation.
- Days at 90°F or more
- 5a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 196a normal year
- Days that stay below freezing
- 73high of 32°F or less
- Days with 0.01 inch of precipitation
- 147a normal year
- Days with 1 inch of snow or more
- 24a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00177654.
How sunny is it at Sebec Lake?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds at Sebec Lake, 3.5 kWh per square metre a day. September is the sunniest month (74%) and December the cloudiest (59%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 64% | 1.5 |
| February | 66% | 2.4 |
| March | 69% | 3.6 |
| April | 67% | 4.6 |
| May | 65% | 5.1 |
| June | 67% | 5.5 |
| July | 72% | 5.6 |
| August | 73% | 5.0 |
| September | 74% | 4.0 |
| October | 65% | 2.5 |
| November | 61% | 1.5 |
| December | 59% | 1.1 |
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 Sebec Lake record?
A normal year at Sebec Lake brings 8,758 heating degree days, 63% more than the median U.S. place (5,373), and 212 cooling degree days, 77% 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 1,730 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,604 | 0 |
| February | 1,378 | 0 |
| March | 1,206 | 0 |
| April | 780 | 0 |
| May | 408 | 5 |
| June | 148 | 38 |
| July | 39 | 89 |
| August | 66 | 65 |
| September | 250 | 15 |
| October | 620 | 0 |
| November | 933 | 0 |
| December | 1,328 | 0 |
| Year (annual) | 8,758 | 212 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00177654. 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.
How does Sebec Lake's climate compare?
Sebec Lake is warmer than 9 of the 42 places with their own NOAA record in Maine, and wetter than 29. Across the 7,247 U.S. stations with normals, its annual mean of 41.4°F is warmer than 8%.
In the Köppen classification computed from these normals, Sebec Lake 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 Sebec Lake's climate
What is the coldest month at Sebec Lake?
January, with a normal high of 24°F and a normal low of 3°F. The warmest is July (78°F by day, 55°F at night).
Does it snow at Sebec Lake?
Yes: 100 inches in a normal year, falling on 46 days with 0.1 inch or more, the most in February (23.0 inches).
What is the rainiest month at Sebec Lake?
October, with 5.15 in of precipitation in a normal year; the driest is February with 3.17 in.
What plant hardiness zone is Sebec Lake in?
The USDA's 2023 map puts Sebec Lake in zone 5a in ZIP code 04426, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −24°F (15 years, 1991-2020): zone 4b.
How late can frost come at Sebec Lake?
In half of years the last 32°F night comes after May 16; in one year in ten it comes after June 1. Waiting until June 1 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maine climateThe statewide normals and every place in the state
- Barnard, ME4 miles from this station, 42.4°F a year
- Dover-Foxcroft, ME5 miles from this station, 42.2°F a year
- East Sangerville, ME9 miles from this station, 43.3°F a year
- Greenville, ME23 miles from this station, 41.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made