West Rockport (1 mi NNW), Maine climate: Climate normals at a NOAA weather station
West Rockport (1 mi NNW)'s normal year runs from 12°F January nights to 77°F July afternoons, with 56.2 inches of precipitation and 69 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.5°C, January lows of −11°C, July highs of 25°C, 1,427 mm of precipitation a year.
- NOAA stationWest Rockport (1 mi NNW)
- Station IDUSC00179593
- Location44.19°N 69.15°W
- Elevation361 ft (110 m)
On October 23, the normal high in West Rockport (1 mi NNW) is 55°F and the normal low 39°F, and the chance of measurable rain or snow is 35%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for West Rockport (1 mi NNW).
- Jan 30° 12°
- Feb 33° 14°
- Mar 40° 22°
- Apr 51° 34°
- May 62° 44°
- Jun 71° 54°
- Jul 77° 60°
- Aug 76° 59°
- Sep 69° 52°
- Oct 57° 41°
- Nov 47° 31°
- Dec 36° 20°
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 West Rockport (1 mi NNW) each month?
July is the warmest month, with normal highs of 77°F; January the coldest, with normal lows of 12°F. The most precipitation falls in October (6.07 in), the least in July (3.20 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 30°F | 12°F | 21.2°F | 4.75 | 17.2 | 10 | <1 | 30 | 9 h 10 min |
| February | 33°F | 14°F | 23.1°F | 4.20 | 19.2 | 9 | <1 | 27 | 10 h 30 min |
| March | 40°F | 22°F | 30.9°F | 5.01 | 11.3 | 10 | <1 | 27 | 11 h 50 min |
| April | 51°F | 34°F | 42.5°F | 5.21 | 3.5 | 11 | <1 | 14 | 13 h 20 min |
| May | 62°F | 44°F | 53.3°F | 4.22 | 0.0 | 12 | <1 | 1 | 14 h 40 min |
| June | 71°F | 54°F | 62.1°F | 4.49 | 0.0 | 12 | <1 | <1 | 15 h 30 min |
| July | 77°F | 60°F | 68.2°F | 3.20 | 0.0 | 11 | 1 | <1 | 15 h 10 min |
| August | 76°F | 59°F | 67.7°F | 3.37 | 0.0 | 9 | <1 | <1 | 14 h |
| September | 69°F | 52°F | 60.5°F | 4.49 | 0.0 | 9 | <1 | <1 | 12 h 40 min |
| October | 57°F | 41°F | 49.0°F | 6.07 | 0.2 | 11 | <1 | 4 | 11 h |
| November | 47°F | 31°F | 38.9°F | 5.27 | 2.3 | 10 | <1 | 18 | 9 h 40 min |
| December | 36°F | 20°F | 28.3°F | 5.92 | 15.0 | 12 | <1 | 28 | 8 h 50 min |
| Year (annual) | 54°F | 37°F | 45.5°F | 56.20 | 68.7 | 124 | 2 | 148 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −1°C | −11°C | −6.0°C | 121 mm | 44 cm |
| February | 0°C | −10°C | −4.9°C | 107 mm | 49 cm |
| March | 4°C | −5°C | −0.6°C | 127 mm | 29 cm |
| April | 11°C | 1°C | 5.8°C | 132 mm | 9 cm |
| May | 17°C | 7°C | 11.8°C | 107 mm | 0 cm |
| June | 22°C | 12°C | 16.7°C | 114 mm | 0 cm |
| July | 25°C | 15°C | 20.1°C | 81 mm | 0 cm |
| August | 25°C | 15°C | 19.8°C | 86 mm | 0 cm |
| September | 21°C | 11°C | 15.8°C | 114 mm | 0 cm |
| October | 14°C | 5°C | 9.4°C | 154 mm | 1 cm |
| November | 8°C | 0°C | 3.8°C | 134 mm | 6 cm |
| December | 2°C | −7°C | −2.1°C | 150 mm | 38 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00179593; 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 West Rockport (1 mi NNW)?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, September has the fewest days with rain (9).
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 USC00179593.
When is the last frost at West Rockport (1 mi NNW)?
In West Rockport (1 mi NNW), the last spring frost (32°F) comes after April 27 in half of years and after May 9 in one year in ten; the first autumn frost comes before October 19 in half of years and before October 5 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
- April 271 year in 10 after May 9; 9 in 10 after April 17
- First autumn frost, half of years before
- October 191 year in 10 before October 5; 9 in 10 before November 3
NOAA puts the median frost-free season at 175 days, and the season without a hard freeze (28°F) at 197 days.
A hard freeze (28°F) comes after April 15 in half of springs and before October 31 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts West Rockport (1 mi NNW) in zone 6a in ZIP code 04856, 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 5b: the coldest night of a typical year reaches −11°F (16 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 USC00179593; 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 West Rockport (1 mi NNW)?
In a normal year in West Rockport (1 mi NNW), 2 days a year reach 90°F, 148 nights fall to 32°F or colder and 124 days bring measurable precipitation.
- Days at 90°F or more
- 2a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 148a normal year
- Days that stay below freezing
- 48high of 32°F or less
- Days with 0.01 inch of precipitation
- 124a normal year
- Days with 1 inch of snow or more
- 17a normal year
The highest temperature in this station's record (since 1976) is 96°F, on June 25, 2025; the lowest is −25°F, on December 26, 1980.
The wettest calendar year on that record is 2009, with 77.11 in; the snowiest season is 2014–15, with 130.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00179593; records: ACIS (NOAA Regional Climate Centers), station USC00179593. Records use complete months only; a month missing more than three days is left out.
How sunny is it at West Rockport (1 mi NNW)?
Over a year 71% of the sunlight that would reach the ground under clear skies gets through the clouds at West Rockport (1 mi NNW), 3.7 kWh per square metre a day. September is the sunniest month (77%) and December the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 67% | 1.7 |
| February | 69% | 2.5 |
| March | 70% | 3.7 |
| April | 68% | 4.6 |
| May | 67% | 5.3 |
| June | 68% | 5.6 |
| July | 75% | 5.8 |
| August | 77% | 5.3 |
| September | 77% | 4.2 |
| October | 68% | 2.6 |
| November | 66% | 1.7 |
| December | 62% | 1.3 |
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 West Rockport (1 mi NNW) record?
A normal year at West Rockport (1 mi NNW) brings 7,396 heating degree days, 38% more than the median U.S. place (5,373), and 311 cooling degree days, 66% 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 2,043 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,359 | 0 |
| February | 1,175 | 0 |
| March | 1,057 | 0 |
| April | 675 | 0 |
| May | 371 | 7 |
| June | 126 | 40 |
| July | 26 | 124 |
| August | 26 | 111 |
| September | 165 | 29 |
| October | 495 | 1 |
| November | 783 | 0 |
| December | 1,138 | 0 |
| Year (annual) | 7,396 | 311 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00179593. 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 West Rockport (1 mi NNW) been warmer than normal?
2024 averaged 48.3°F, 2.8°F above the 1991-2020 normal of 45.5°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 48.0°F | +2.5°F | 55.94 | – |
| 2022 | 47.4°F | +1.9°F | 54.50 | – |
| 2023 | 47.9°F | +2.4°F | 66.34 | – |
| 2024 | 48.3°F | +2.8°F | 54.70 | – |
Over 31 complete years from 1977 to 2025, the station's annual mean temperature rose at a fitted 6.2°F per century (+0.34°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00179593; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does West Rockport (1 mi NNW)'s climate compare?
West Rockport (1 mi NNW) is warmer than 31 of the 42 places with their own NOAA record in Maine, and wetter than 40. Across the 7,247 U.S. stations with normals, its annual mean of 45.5°F is warmer than 21%.
In the Köppen classification computed from these normals, West Rockport (1 mi NNW) 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.
Which places near West Rockport (1 mi NNW) share this climate record?
2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Rockland, ME7,060 people · 5 mi S
- Camden, ME5,189 people · 4 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about West Rockport (1 mi NNW)'s climate
What is the coldest month at West Rockport (1 mi NNW)?
January, with a normal high of 30°F and a normal low of 12°F. The warmest is July (77°F by day, 60°F at night).
Does it snow at West Rockport (1 mi NNW)?
Yes: 69 inches in a normal year, falling on 21 days with 0.1 inch or more, the most in February (19.2 inches).
What is the rainiest month at West Rockport (1 mi NNW)?
October, with 6.07 in of precipitation in a normal year; the driest is July with 3.20 in.
What plant hardiness zone is West Rockport (1 mi NNW) in?
The USDA's 2023 map puts West Rockport (1 mi NNW) in zone 6a in ZIP code 04856, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −11°F (16 years, 1991-2020): zone 5b.
How late can frost come at West Rockport (1 mi NNW)?
In half of years the last 32°F night comes after April 27; in one year in ten it comes after May 9. Waiting until May 9 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maine climateThe statewide normals and every place in the state
- Tenants Harbor, ME14 miles from this station, 46.4°F a year
- Belfast, ME16 miles from this station, 44.1°F a year
- Newcastle, ME22 miles from this station, 46.4°F a year
- Gardiner, ME32 miles from this station, 45.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made