Andover 2, Maine climate: Climate normals at a NOAA weather station
Andover 2's normal year runs from 4°F January nights to 77°F July afternoons, with 51.6 inches of precipitation and 112 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 4.9°C, January lows of −16°C, July highs of 25°C, 1,311 mm of precipitation a year.
- NOAA stationAndover 2
- Station IDUSC00170217
- Location44.65°N 70.79°W
- Elevation822 ft (251 m)
On October 22, the normal high in Andover 2 is 52°F and the normal low 32°F, and the chance of measurable rain or snow is 42%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Andover 2.
- Jan 24° 4°
- Feb 28° 4°
- Mar 37° 15°
- Apr 50° 27°
- May 64° 39°
- Jun 72° 49°
- Jul 77° 54°
- Aug 77° 51°
- Sep 69° 44°
- Oct 55° 33°
- Nov 42° 24°
- Dec 30° 13°
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 Andover 2 each month?
July is the warmest month, with normal highs of 77°F; January the coldest, with normal lows of 4°F. The most precipitation falls in October (5.88 in), the least in February (2.71 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 24°F | 4°F | 14.0°F | 3.41 | 22.5 | 11 | <1 | 31 | 9 h 10 min |
| February | 28°F | 4°F | 15.7°F | 2.71 | 26.5 | 9 | <1 | 28 | 10 h 20 min |
| March | 37°F | 15°F | 25.7°F | 3.48 | 17.6 | 9 | <1 | 31 | 11 h 50 min |
| April | 50°F | 27°F | 38.4°F | 4.54 | 7.0 | 11 | <1 | 24 | 13 h 30 min |
| May | 64°F | 39°F | 51.5°F | 4.37 | 0.2 | 14 | <1 | 5 | 14 h 50 min |
| June | 72°F | 49°F | 60.4°F | 5.38 | 0.0 | 15 | <1 | <1 | 15 h 30 min |
| July | 77°F | 54°F | 65.6°F | 4.75 | 0.0 | 12 | 2 | <1 | 15 h 20 min |
| August | 77°F | 51°F | 64.0°F | 4.33 | 0.0 | 12 | <1 | <1 | 14 h 10 min |
| September | 69°F | 44°F | 56.3°F | 4.02 | 0.0 | 9 | <1 | 3 | 12 h 40 min |
| October | 55°F | 33°F | 44.1°F | 5.88 | 0.6 | 13 | <1 | 13 | 11 h |
| November | 42°F | 24°F | 33.1°F | 4.48 | 8.3 | 11 | <1 | 25 | 9 h 40 min |
| December | 30°F | 13°F | 21.4°F | 4.28 | 29.1 | 14 | <1 | 30 | 8 h 50 min |
| Year (annual) | 52°F | 30°F | 40.8°F | 51.63 | 111.8 | 141 | 2 | 190 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −4°C | −16°C | −10.0°C | 87 mm | 57 cm |
| February | −2°C | −16°C | −9.1°C | 69 mm | 67 cm |
| March | 3°C | −10°C | −3.5°C | 88 mm | 45 cm |
| April | 10°C | −3°C | 3.6°C | 115 mm | 18 cm |
| May | 18°C | 4°C | 10.8°C | 111 mm | 1 cm |
| June | 22°C | 9°C | 15.8°C | 137 mm | 0 cm |
| July | 25°C | 12°C | 18.7°C | 121 mm | 0 cm |
| August | 25°C | 11°C | 17.8°C | 110 mm | 0 cm |
| September | 20°C | 7°C | 13.5°C | 102 mm | 0 cm |
| October | 13°C | 1°C | 6.7°C | 149 mm | 2 cm |
| November | 6°C | −4°C | 0.6°C | 114 mm | 21 cm |
| December | −1°C | −11°C | −5.9°C | 109 mm | 74 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00170217; 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 Andover 2?
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 USC00170217.
When is the last frost at Andover 2?
In Andover 2, the last spring frost (32°F) comes after May 19 in half of years and after June 1 in one year in ten; the first autumn frost comes before September 25 in half of years and before September 13 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 191 year in 10 after June 1; 9 in 10 after May 5
- First autumn frost, half of years before
- September 251 year in 10 before September 13; 9 in 10 before October 7
NOAA puts the median frost-free season at 129 days, and the season without a hard freeze (28°F) at 150 days.
A hard freeze (28°F) comes after May 6 in half of springs and before October 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Andover 2 in zone 4b in ZIP code 04216, the nearest ZIP area.
Frost dates for every NOAA station in Maine · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00170217; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Andover 2?
In a normal year in Andover 2, 2 days a year reach 90°F, 190 nights fall to 32°F or colder and 141 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
- 190a normal year
- Days that stay below freezing
- 80high of 32°F or less
- Days with 0.01 inch of precipitation
- 141a normal year
- Days with 1 inch of snow or more
- 32a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00170217.
How sunny is it at Andover 2?
Over a year 69% of the sunlight that would reach the ground under clear skies gets through the clouds at Andover 2, 3.6 kWh per square metre a day. September is the sunniest month (76%) and December the cloudiest (60%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 64% | 1.6 |
| February | 67% | 2.5 |
| March | 69% | 3.6 |
| April | 67% | 4.6 |
| May | 66% | 5.2 |
| June | 68% | 5.6 |
| July | 74% | 5.7 |
| August | 76% | 5.2 |
| September | 76% | 4.2 |
| October | 66% | 2.6 |
| November | 64% | 1.7 |
| 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 Andover 2 record?
A normal year at Andover 2 brings 8,940 heating degree days, 66% more than the median U.S. place (5,373), and 168 cooling degree days, 81% 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 1,613 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,582 | 0 |
| February | 1,382 | 0 |
| March | 1,220 | 0 |
| April | 798 | 0 |
| May | 421 | 3 |
| June | 168 | 30 |
| July | 58 | 76 |
| August | 76 | 44 |
| September | 277 | 16 |
| October | 648 | 0 |
| November | 959 | 0 |
| December | 1,352 | 0 |
| Year (annual) | 8,940 | 168 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00170217. 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 Andover 2 been warmer than normal?
2022 averaged 43.3°F, 2.5°F above the 1991-2020 normal of 40.8°F. 2 of the 2 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 44.6°F | +3.8°F | 39.19 | – |
| 2022 | 43.3°F | +2.5°F | 51.14 | – |
Source: observed years: ACIS, station USC00170217. A year counts only with all twelve months complete.
How does Andover 2's climate compare?
Andover 2 is warmer than 7 of the 42 places with their own NOAA record in Maine, and wetter than 39. Across the 7,247 U.S. stations with normals, its annual mean of 40.8°F is warmer than 7%.
In the Köppen classification computed from these normals, Andover 2 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 Andover 2's climate
What is the coldest month at Andover 2?
January, with a normal high of 24°F and a normal low of 4°F. The warmest is July (77°F by day, 54°F at night).
Does it snow at Andover 2?
Yes: 112 inches in a normal year, falling on 40 days with 0.1 inch or more, the most in December (29.1 inches).
What is the rainiest month at Andover 2?
October, with 5.88 in of precipitation in a normal year; the driest is February with 2.71 in.
What plant hardiness zone is Andover 2 in?
The USDA's 2023 map puts Andover 2 in zone 4b in ZIP code 04216, the nearest ZIP area.
How late can frost come at Andover 2?
In half of years the last 32°F night comes after May 19; 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
- Middle Dam, ME11 miles from this station, 40.3°F a year
- Rumford, ME15 miles from this station, 44.0°F a year
- Berlin, NH20 miles from this station, 41.4°F a year
- Errol Airport, NH21 miles from this station, 39.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made