Cape Neddick, Maine climate: Normal weather by month, frost dates and records
Cape Neddick's normal year runs from 14°F January nights to 79°F July afternoons, with 51.6 inches of precipitation and 70 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.3°C, January lows of −10°C, July highs of 26°C, 1,311 mm of precipitation a year.
- NOAA stationCape Neddick
- Station IDUSC00171131
- Location43.22°N 70.64°W
- Elevation152 ft (46 m)
- From the center4 miles
- Population (census place)2,578
On October 23, the normal high in Cape Neddick is 57°F and the normal low 37°F, and the chance of measurable rain or snow is 33%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Cape Neddick.
- Jan 32° 14°
- Feb 35° 16°
- Mar 42° 24°
- Apr 56° 34°
- May 66° 44°
- Jun 74° 55°
- Jul 79° 61°
- Aug 79° 59°
- Sep 71° 51°
- Oct 59° 40°
- Nov 48° 31°
- Dec 38° 21°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Cape Neddick each month?
July is the warmest month, with normal highs of 79°F; January the coldest, with normal lows of 14°F. The most precipitation falls in October (5.35 in), the least in August (3.60 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 32°F | 14°F | 23.2°F | 3.61 | 18.5 | 11 | <1 | 29 | 9 h 20 min |
| February | 35°F | 16°F | 25.4°F | 3.64 | 20.1 | 9 | <1 | 27 | 10 h 30 min |
| March | 42°F | 24°F | 33.0°F | 4.92 | 11.6 | 10 | <1 | 26 | 11 h 50 min |
| April | 56°F | 34°F | 44.6°F | 4.78 | 2.4 | 11 | <1 | 15 | 13 h 20 min |
| May | 66°F | 44°F | 54.9°F | 3.93 | 0.0 | 11 | <1 | 1 | 14 h 40 min |
| June | 74°F | 55°F | 64.1°F | 4.46 | 0.0 | 12 | 1 | <1 | 15 h 20 min |
| July | 79°F | 61°F | 69.7°F | 3.80 | 0.0 | 10 | 1 | <1 | 15 h 10 min |
| August | 79°F | 59°F | 69.0°F | 3.60 | 0.0 | 9 | <1 | <1 | 14 h |
| September | 71°F | 51°F | 61.2°F | 4.30 | 0.0 | 8 | <1 | <1 | 12 h 30 min |
| October | 59°F | 40°F | 49.6°F | 5.35 | 0.0 | 10 | <1 | 5 | 11 h 10 min |
| November | 48°F | 31°F | 39.4°F | 4.30 | 1.5 | 10 | <1 | 20 | 9 h 50 min |
| December | 38°F | 21°F | 29.4°F | 4.93 | 16.0 | 12 | <1 | 27 | 9 h |
| Year (annual) | 57°F | 37°F | 46.9°F | 51.62 | 70.1 | 123 | 2 | 149 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −10°C | −4.9°C | 92 mm | 47 cm |
| February | 2°C | −9°C | −3.7°C | 92 mm | 51 cm |
| March | 6°C | −5°C | 0.6°C | 125 mm | 29 cm |
| April | 13°C | 1°C | 7.0°C | 121 mm | 6 cm |
| May | 19°C | 7°C | 12.7°C | 100 mm | 0 cm |
| June | 23°C | 13°C | 17.8°C | 113 mm | 0 cm |
| July | 26°C | 16°C | 20.9°C | 97 mm | 0 cm |
| August | 26°C | 15°C | 20.6°C | 91 mm | 0 cm |
| September | 22°C | 11°C | 16.2°C | 109 mm | 0 cm |
| October | 15°C | 4°C | 9.8°C | 136 mm | 0 cm |
| November | 9°C | −1°C | 4.1°C | 109 mm | 4 cm |
| December | 3°C | −6°C | −1.4°C | 125 mm | 41 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00171131; 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.
When is the best weather to visit Cape Neddick?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (8).
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 USC00171131.
When is the last frost in Cape Neddick?
In Cape Neddick, the last spring frost (32°F) comes after May 1 in half of years and after May 14 in one year in ten; the first autumn frost comes before October 14 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 11 year in 10 after May 14; 9 in 10 after April 20
- First autumn frost, half of years before
- October 141 year in 10 before October 1; 9 in 10 before October 31
NOAA puts the median frost-free season at 165 days, and the season without a hard freeze (28°F) at 192 days.
A hard freeze (28°F) comes after April 18 in half of springs and before October 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Cape Neddick in zone 6a in ZIP code 03909.
Frost dates for every NOAA station in Maine · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00171131; 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 in Cape Neddick?
In a normal year in Cape Neddick, 2 days a year reach 90°F, 149 nights fall to 32°F or colder and 123 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
- 149a normal year
- Days that stay below freezing
- 38high of 32°F or less
- Days with 0.01 inch of precipitation
- 123a normal year
- Days with 1 inch of snow or more
- 17a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00171131.
How sunny is Cape Neddick?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Cape Neddick, 3.8 kWh per square metre a day. August is the sunniest month (79%) and December the cloudiest (64%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 67% | 1.7 |
| February | 69% | 2.5 |
| March | 69% | 3.6 |
| April | 70% | 4.7 |
| May | 69% | 5.3 |
| June | 70% | 5.6 |
| July | 77% | 5.9 |
| August | 79% | 5.3 |
| September | 78% | 4.3 |
| October | 70% | 2.8 |
| November | 68% | 1.8 |
| December | 64% | 1.4 |
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 much heating and cooling does Cape Neddick need?
A normal year in Cape Neddick brings 6,967 heating degree days, 30% more than the median U.S. place (5,373), and 415 cooling degree days, 54% 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 2,266 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,295 | 0 |
| February | 1,109 | 0 |
| March | 994 | 1 |
| April | 613 | 1 |
| May | 327 | 12 |
| June | 90 | 61 |
| July | 12 | 158 |
| August | 15 | 137 |
| September | 159 | 45 |
| October | 478 | 1 |
| November | 770 | 0 |
| December | 1,105 | 0 |
| Year (annual) | 6,967 | 415 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00171131. 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.
Has Cape Neddick been warmer than normal lately?
2025 averaged 46.6°F, 0.3°F below the 1991-2020 normal of 46.9°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 48.4°F | +1.5°F | 51.68 | 27.8 |
| 2022 | 47.9°F | +1.0°F | 45.19 | 36.4 |
| 2023 | 48.9°F | +2.0°F | 63.72 | 43.9 |
| 2024 | 48.7°F | +1.8°F | 45.97 | 31.7 |
| 2025 | 46.6°F | −0.3°F | 39.68 | 58.4 |
Source: observed years: ACIS, station USC00171131. A year counts only with all twelve months complete.
How does Cape Neddick's climate compare?
Cape Neddick is warmer than 40 of the other 41 places with their own NOAA record in Maine, and wetter than 38. Across the 7,247 U.S. stations with normals, its annual mean of 46.9°F is warmer than 27%.
In the Köppen classification computed from these normals, Cape Neddick 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 Cape Neddick's climate
What is the coldest month in Cape Neddick?
January, with a normal high of 32°F and a normal low of 14°F. The warmest is July (79°F by day, 61°F at night).
Does it snow in Cape Neddick?
Yes: 70 inches in a normal year, falling on 26 days with 0.1 inch or more, the most in February (20.1 inches).
What is the rainiest month in Cape Neddick?
October, with 5.35 in of precipitation in a normal year; the driest is August with 3.60 in.
What plant hardiness zone is Cape Neddick in?
The USDA's 2023 map puts Cape Neddick in zone 6a in ZIP code 03909.
How late can frost come in Cape Neddick?
In half of years the last 32°F night comes after May 1; in one year in ten it comes after May 14. Waiting until May 14 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maine climateThe statewide normals and every place in the state
- Kennebunkport, ME12 miles from this station, 45.3°F a year
- Rochester, NH15 miles from this station, 47.7°F a year
- Durham, NH15 miles from this station, 47.1°F a year
- Greenland, NH17 miles from this station, 47.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made