Robbinston, Maine climate: Climate normals at a NOAA weather station
Robbinston's normal year runs from 11°F January nights to 77°F July afternoons, with 54.7 inches of precipitation and 95 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.8°C, January lows of −12°C, July highs of 25°C, 1,390 mm of precipitation a year.
- NOAA stationRobbinston
- Station IDUSC00177238
- Location45.09°N 67.12°W
- Elevation115 ft (35 m)
On October 23, the normal high in Robbinston is 54°F and the normal low 37°F, and the chance of measurable rain or snow is 40%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Robbinston.
- Jan 29° 11°
- Feb 32° 13°
- Mar 40° 22°
- Apr 51° 32°
- May 62° 41°
- Jun 71° 50°
- Jul 77° 56°
- Aug 77° 56°
- Sep 69° 49°
- Oct 57° 39°
- Nov 45° 30°
- Dec 34° 19°
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 Robbinston each month?
July is the warmest month, with normal highs of 77°F; January the coldest, with normal lows of 11°F. The most precipitation falls in December (6.27 in), the least in July (3.18 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 29°F | 11°F | 19.9°F | 4.85 | 24.8 | 14 | <1 | 30 | 9 h 10 min |
| February | 32°F | 13°F | 22.1°F | 4.17 | 21.9 | 13 | <1 | 27 | 10 h 20 min |
| March | 40°F | 22°F | 30.8°F | 4.82 | 18.9 | 13 | <1 | 29 | 11 h 50 min |
| April | 51°F | 32°F | 41.4°F | 4.39 | 6.0 | 13 | <1 | 18 | 13 h 30 min |
| May | 62°F | 41°F | 51.7°F | 4.35 | 0.2 | 15 | <1 | 3 | 14 h 50 min |
| June | 71°F | 50°F | 60.4°F | 4.10 | 0.0 | 12 | 1 | <1 | 15 h 40 min |
| July | 77°F | 56°F | 66.5°F | 3.18 | 0.0 | 12 | 1 | <1 | 15 h 20 min |
| August | 77°F | 56°F | 66.3°F | 3.45 | 0.0 | 10 | 1 | <1 | 14 h 10 min |
| September | 69°F | 49°F | 59.0°F | 4.23 | 0.0 | 10 | <1 | <1 | 12 h 40 min |
| October | 57°F | 39°F | 48.0°F | 5.43 | 0.3 | 12 | <1 | 7 | 11 h |
| November | 45°F | 30°F | 37.7°F | 5.50 | 3.6 | 13 | <1 | 20 | 9 h 40 min |
| December | 34°F | 19°F | 26.9°F | 6.27 | 19.3 | 14 | <1 | 29 | 8 h 50 min |
| Year (annual) | 54°F | 35°F | 44.2°F | 54.74 | 95.0 | 150 | 3 | 163 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −2°C | −12°C | −6.7°C | 123 mm | 63 cm |
| February | 0°C | −11°C | −5.5°C | 106 mm | 56 cm |
| March | 4°C | −6°C | −0.7°C | 122 mm | 48 cm |
| April | 10°C | 0°C | 5.2°C | 112 mm | 15 cm |
| May | 17°C | 5°C | 10.9°C | 110 mm | 1 cm |
| June | 22°C | 10°C | 15.8°C | 104 mm | 0 cm |
| July | 25°C | 13°C | 19.2°C | 81 mm | 0 cm |
| August | 25°C | 13°C | 19.1°C | 88 mm | 0 cm |
| September | 21°C | 9°C | 15.0°C | 107 mm | 0 cm |
| October | 14°C | 4°C | 8.9°C | 138 mm | 1 cm |
| November | 7°C | −1°C | 3.2°C | 140 mm | 9 cm |
| December | 1°C | −7°C | −2.8°C | 159 mm | 49 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00177238; 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 Robbinston?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, August has the fewest days with rain (10).
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 USC00177238.
When is the last frost at Robbinston?
In Robbinston, the last spring frost (32°F) comes after May 5 in half of years and after May 18 in one year in ten; the first autumn frost comes before October 13 in half of years and before October 1 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 51 year in 10 after May 18; 9 in 10 after April 24
- First autumn frost, half of years before
- October 131 year in 10 before October 1; 9 in 10 before October 30
NOAA puts the median frost-free season at 160 days, and the season without a hard freeze (28°F) at 187 days.
A hard freeze (28°F) comes after April 21 in half of springs and before October 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Robbinston in zone 5b in ZIP code 04671, 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 (26 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 USC00177238; 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 Robbinston?
In a normal year in Robbinston, 3 days a year reach 90°F, 163 nights fall to 32°F or colder and 150 days bring measurable precipitation.
- Days at 90°F or more
- 3a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 163a normal year
- Days that stay below freezing
- 55high of 32°F or less
- Days with 0.01 inch of precipitation
- 150a normal year
- Days with 1 inch of snow or more
- 25a normal year
The highest temperature in this station's record (since 1994) is 97°F, on June 19, 2020; the lowest is −20°F, on January 16, 2004.
The wettest calendar year on that record is 2014, with 75.85 in; the snowiest season is 2007–08, with 126.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00177238; records: ACIS (NOAA Regional Climate Centers), station USC00177238. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Robbinston?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds at Robbinston, 3.5 kWh per square metre a day. September is the sunniest month (74%) and December the cloudiest (60%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 66% | 1.5 |
| February | 67% | 2.4 |
| March | 67% | 3.5 |
| April | 65% | 4.4 |
| May | 65% | 5.1 |
| June | 67% | 5.5 |
| July | 72% | 5.6 |
| August | 74% | 5.0 |
| September | 74% | 4.0 |
| October | 66% | 2.5 |
| November | 61% | 1.5 |
| December | 60% | 1.2 |
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 Robbinston record?
A normal year at Robbinston brings 7,745 heating degree days, 44% more than the median U.S. place (5,373), and 209 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 1,787 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,400 | 0 |
| February | 1,200 | 0 |
| March | 1,062 | 0 |
| April | 707 | 0 |
| May | 414 | 2 |
| June | 160 | 22 |
| July | 40 | 86 |
| August | 38 | 79 |
| September | 199 | 20 |
| October | 527 | 0 |
| November | 819 | 0 |
| December | 1,181 | 0 |
| Year (annual) | 7,745 | 209 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00177238. 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 Robbinston been warmer than normal?
2025 averaged 44.6°F, 0.4°F above the 1991-2020 normal of 44.2°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 46.7°F | +2.5°F | 48.39 | – |
| 2022 | 46.1°F | +1.9°F | 61.48 | – |
| 2023 | 46.1°F | +1.9°F | 60.61 | – |
| 2024 | 46.9°F | +2.7°F | 49.83 | – |
| 2025 | 44.6°F | +0.4°F | 45.57 | 73.4 |
Over 31 complete years from 1995 to 2025, the station's annual mean temperature rose at a fitted 5.9°F per century (+0.33°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00177238; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Robbinston's climate compare?
Robbinston is warmer than 22 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 44.2°F is warmer than 16%.
In the Köppen classification computed from these normals, Robbinston 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 Robbinston share this climate record?
Calais has no NOAA station with 1991-2020 normals of its 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.
- Calais, ME3,105 people · 6 mi NW
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 Robbinston's climate
What is the coldest month at Robbinston?
January, with a normal high of 29°F and a normal low of 11°F. The warmest is July (77°F by day, 56°F at night).
Does it snow at Robbinston?
Yes: 95 inches in a normal year, falling on 46 days with 0.1 inch or more, the most in January (24.8 inches).
What is the rainiest month at Robbinston?
December, with 6.27 in of precipitation in a normal year; the driest is July with 3.18 in.
What plant hardiness zone is Robbinston in?
The USDA's 2023 map puts Robbinston in zone 5b in ZIP code 04671, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −11°F (26 years, 1991-2020): zone 5b.
How late can frost come at Robbinston?
In half of years the last 32°F night comes after May 5; in one year in ten it comes after May 18. Waiting until May 18 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maine climateThe statewide normals and every place in the state
- Eastport, ME14 miles from this station, 45.0°F a year
- Woodland, ME14 miles from this station, 46.6°F a year
- Wesley, ME28 miles from this station, 44.3°F a year
- Grand Lake Stream, ME32 miles from this station, 44.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made