Old, Maine climate: Normal weather by month, frost dates and records
Old's normal year runs from 6°F January nights to 79°F July afternoons, with 44.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.2°C, January lows of −14°C, July highs of 26°C, 1,129 mm of precipitation a year.
- NOAA stationOld Town (2 mi W)
- Station IDUSW00094644
- Location44.93°N 68.70°W
- Elevation127 ft (39 m)
- Population7,511
On October 14, the normal high in Old is 58°F and the normal low 36°F, and the chance of measurable rain or snow is 38%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Old.
- Jan 27° 6°
- Feb 31° 8°
- Mar 39° 19°
- Apr 52° 30°
- May 65° 41°
- Jun 73° 50°
- Jul 79° 56°
- Aug 78° 53°
- Sep 70° 46°
- Oct 57° 36°
- Nov 44° 27°
- Dec 34° 16°
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 Old each month?
July is the warmest month, with normal highs of 79°F; January the coldest, with normal lows of 6°F. The most precipitation falls in October (4.27 in), the least in February (2.98 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 27°F | 6°F | 16.8°F | 3.66 | 12 | <1 | 30 | 9 h 10 min |
| February | 31°F | 8°F | 19.4°F | 2.98 | 11 | <1 | 27 | 10 h 20 min |
| March | 39°F | 19°F | 29.3°F | 3.78 | 12 | <1 | 29 | 11 h 50 min |
| April | 52°F | 30°F | 41.2°F | 3.68 | 13 | <1 | 19 | 13 h 30 min |
| May | 65°F | 41°F | 52.6°F | 3.47 | 14 | <1 | 4 | 14 h 50 min |
| June | 73°F | 50°F | 61.3°F | 4.19 | 14 | 1 | <1 | 15 h 30 min |
| July | 79°F | 56°F | 67.5°F | 3.45 | 12 | 1 | <1 | 15 h 20 min |
| August | 78°F | 53°F | 65.5°F | 3.15 | 12 | 1 | <1 | 14 h 10 min |
| September | 70°F | 46°F | 57.7°F | 3.67 | 9 | <1 | 2 | 12 h 40 min |
| October | 57°F | 36°F | 46.4°F | 4.27 | 12 | <1 | 11 | 11 h |
| November | 44°F | 27°F | 35.8°F | 3.99 | 12 | <1 | 23 | 9 h 40 min |
| December | 34°F | 16°F | 24.7°F | 4.15 | 15 | <1 | 29 | 8 h 50 min |
| Year (annual) | 54°F | 32°F | 43.2°F | 44.44 | 147 | 2 | 173 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −3°C | −14°C | −8.4°C | 93 mm |
| February | −1°C | −13°C | −7.0°C | 76 mm |
| March | 4°C | −7°C | −1.5°C | 96 mm |
| April | 11°C | −1°C | 5.1°C | 93 mm |
| May | 18°C | 5°C | 11.4°C | 88 mm |
| June | 23°C | 10°C | 16.3°C | 106 mm |
| July | 26°C | 13°C | 19.7°C | 88 mm |
| August | 25°C | 12°C | 18.6°C | 80 mm |
| September | 21°C | 8°C | 14.3°C | 93 mm |
| October | 14°C | 2°C | 8.0°C | 108 mm |
| November | 7°C | −3°C | 2.1°C | 101 mm |
| December | 1°C | −9°C | −4.1°C | 105 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Bangor (11 miles away), gets 75 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094644; 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 Old?
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 USW00094644.
When is the last frost in Old?
In Old, the last spring frost (32°F) comes after May 13 in half of years and after May 28 in one year in ten; the first autumn frost comes before September 28 in half of years and before September 16 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 131 year in 10 after May 28; 9 in 10 after April 30
- First autumn frost, half of years before
- September 281 year in 10 before September 16; 9 in 10 before October 11
NOAA puts the median frost-free season at 137 days, and the season without a hard freeze (28°F) at 161 days.
A hard freeze (28°F) comes after April 30 in half of springs and before October 11 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Old in zone 5a across its 2 ZIP code areas (5a in 04468, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Old's NOAA station is in zone 5a: the coldest night of a typical year reaches −19°F (18 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 USW00094644; 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.
What hardiness zone is each Old ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Old's 2 ZIP code areas are all in zone 5a. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Old?
In a normal year in Old, 2 days a year reach 90°F, 173 nights fall to 32°F or colder and 147 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
- 173a normal year
- Days that stay below freezing
- 60high of 32°F or less
- Days with 0.01 inch of precipitation
- 147a normal year
The highest temperature in this station's record (since 2002) is 96°F, on June 24, 2025; the lowest is −30°F, on January 16, 2009.
The wettest calendar year on that record is 2005, with 65.80 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00094644; records: ACIS (NOAA Regional Climate Centers), station USW00094644. Records use complete months only; a month missing more than three days is left out.
How sunny is Old?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Old, 3.7 kWh per square metre a day. September is the sunniest month (77%) and December the cloudiest (61%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 65% | 1.6 |
| February | 67% | 2.4 |
| March | 69% | 3.6 |
| April | 67% | 4.6 |
| May | 67% | 5.3 |
| June | 69% | 5.6 |
| July | 75% | 5.8 |
| August | 77% | 5.2 |
| September | 77% | 4.2 |
| October | 69% | 2.7 |
| November | 65% | 1.7 |
| December | 61% | 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 much heating and cooling does Old need?
A normal year in Old brings 8,146 heating degree days, 52% more than the median U.S. place (5,373), and 235 cooling degree days, 74% 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 1,816 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,496 | 0 |
| February | 1,275 | 0 |
| March | 1,105 | 0 |
| April | 714 | 0 |
| May | 387 | 5 |
| June | 143 | 32 |
| July | 29 | 106 |
| August | 55 | 72 |
| September | 238 | 20 |
| October | 577 | 1 |
| November | 876 | 0 |
| December | 1,251 | 0 |
| Year (annual) | 8,146 | 235 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094644. 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 Old been warmer than normal lately?
2025 averaged 43.8°F, 0.6°F above the 1991-2020 normal of 43.2°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 45.7°F | +2.5°F | 40.23 |
| 2022 | 44.9°F | +1.7°F | 48.42 |
| 2024 | 46.3°F | +3.1°F | 42.98 |
| 2025 | 43.8°F | +0.6°F | – |
Source: observed years: ACIS, station USW00094644. A year counts only with all twelve months complete.
How does Old's climate compare?
Old is warmer than 16 of the other 41 places with their own NOAA record in Maine, and wetter than 13. Across the 7,247 U.S. stations with normals, its annual mean of 43.2°F is warmer than 13%.
In the Köppen classification computed from these normals, Old 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 Old share this climate record?
Milford 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.
- Milford, ME3,108 people · 4 mi NE
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 Old's climate
What is the coldest month in Old?
January, with a normal high of 27°F and a normal low of 6°F. The warmest is July (79°F by day, 56°F at night).
Does it snow in Old?
Yes. NOAA publishes no 1991-2020 snowfall normal for Old's NOAA station; the nearest record that keeps one, Bangor (11 miles away), records 75 inches of snow in a normal year.
What is the rainiest month in Old?
October, with 4.27 in of precipitation in a normal year; the driest is February with 2.98 in.
What plant hardiness zone is Old in?
The USDA's 2023 map puts Old in zone 5a across its 2 ZIP code areas (5a in 04468, the largest). By the same method at Old's NOAA station, the coldest night of a typical year reaches −19°F (18 years, 1991-2020): zone 5a.
How late can frost come in Old?
In half of years the last 32°F night comes after May 13; in one year in ten it comes after May 28. Waiting until May 28 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maine climateThe statewide normals and every place in the state
- Orono, ME2 miles from this station, 45.1°F a year
- Bangor, ME11 miles from this station, 45.0°F a year
- Corinna, ME27 miles from this station, 44.5°F a year
- Dover-Foxcroft, ME30 miles from this station, 42.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made