Healy, Alaska climate: Normal weather by month, frost dates and records
Healy's normal year runs from −9°F January nights to 67°F July afternoons, with 15.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of −1.9°C, January lows of −23°C, July highs of 20°C, 391 mm of precipitation a year.
- NOAA stationHealy
- Station IDUSC00503585
- Location63.87°N 148.99°W
- Elevation1,417 ft (432 m)
- Population (census place)723
On October 23, the normal high in Healy is 28°F and the normal low 13°F, and the chance of measurable rain or snow is 32%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Healy.
- Jan 8° -9°
- Feb 18° -2°
- Mar 24° 2°
- Apr 41° 22°
- May 56° 35°
- Jun 67° 45°
- Jul 67° 49°
- Aug 62° 44°
- Sep 51° 35°
- Oct 33° 18°
- Nov 16° 1°
- Dec 12° -6°
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 Healy each month?
July is the warmest month, with normal highs of 67°F; January the coldest, with normal lows of −9°F. The most precipitation falls in July (3.04 in), the least in March (0.36 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 8°F | −9°F | -0.4°F | 0.53 | 7 | <1 | 30 | 5 h 30 min |
| February | 18°F | −2°F | 8.3°F | 0.67 | 6 | <1 | 27 | 8 h 30 min |
| March | 24°F | 2°F | 12.6°F | 0.36 | 6 | <1 | 30 | 11 h 40 min |
| April | 41°F | 22°F | 31.3°F | 0.62 | 4 | <1 | 22 | 15 h |
| May | 56°F | 35°F | 45.4°F | 0.87 | 7 | <1 | 11 | 18 h 10 min |
| June | 67°F | 45°F | 55.5°F | 2.48 | 12 | <1 | 1 | 20 h 50 min |
| July | 67°F | 49°F | 58.0°F | 3.04 | 14 | <1 | <1 | 19 h 40 min |
| August | 62°F | 44°F | 52.9°F | 2.75 | 13 | <1 | 1 | 16 h 30 min |
| September | 51°F | 35°F | 42.7°F | 1.57 | 9 | <1 | 12 | 13 h 10 min |
| October | 33°F | 18°F | 25.5°F | 0.95 | 10 | <1 | 26 | 10 h |
| November | 16°F | 1°F | 8.3°F | 0.70 | 10 | <1 | 28 | 6 h 40 min |
| December | 12°F | −6°F | 2.7°F | 0.84 | 9 | <1 | 30 | 4 h 20 min |
| Year (annual) | 38°F | 19°F | 28.6°F | 15.38 | 105 | <1 | 219 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −13°C | −23°C | −18.0°C | 13 mm |
| February | −8°C | −19°C | −13.2°C | 17 mm |
| March | −5°C | −17°C | −10.8°C | 9 mm |
| April | 5°C | −6°C | −0.4°C | 16 mm |
| May | 13°C | 2°C | 7.4°C | 22 mm |
| June | 19°C | 7°C | 13.1°C | 63 mm |
| July | 20°C | 9°C | 14.4°C | 77 mm |
| August | 17°C | 7°C | 11.6°C | 70 mm |
| September | 10°C | 1°C | 5.9°C | 40 mm |
| October | 1°C | −8°C | −3.6°C | 24 mm |
| November | −9°C | −17°C | −13.2°C | 18 mm |
| December | −11°C | −21°C | −16.3°C | 21 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, McKinley Park (10 miles away), gets 77 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00503585; 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 Healy?
Normal highs sit between 65°F and 85°F in June and July. Of those, June has the fewest days with rain (12).
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 USC00503585.
When is the last frost in Healy?
In Healy, the last spring frost (32°F) comes after May 27 in half of years and after June 10 in one year in ten; the first autumn frost comes before September 1 in half of years and before August 18 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 271 year in 10 after June 10; 9 in 10 after May 11
- First autumn frost, half of years before
- September 11 year in 10 before August 18; 9 in 10 before September 19
NOAA puts the median frost-free season at 97 days, and the season without a hard freeze (28°F) at 121 days.
A hard freeze (28°F) comes after May 12 in half of springs and before September 13 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Healy in zone 2a in ZIP code 99743.
Frost dates for every NOAA station in Alaska · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00503585; 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 Healy?
In a normal year in Healy, a 90°F day is rare, 219 nights fall to 32°F or colder and 105 days bring measurable precipitation.
- Days at 90°F or more
- fewer than 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 219a normal year
- Days that stay below freezing
- 125high of 32°F or less
- Days with 0.01 inch of precipitation
- 105a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00503585.
How sunny is Healy?
Over a year 65% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Healy, 2.5 kWh per square metre a day. April is the sunniest month (78%) and October the cloudiest (53%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 60% | 0.2 |
| February | 61% | 0.8 |
| March | 78% | 2.6 |
| April | 78% | 4.4 |
| May | 69% | 5.1 |
| June | 62% | 5.1 |
| July | 59% | 4.4 |
| August | 59% | 3.4 |
| September | 59% | 2.2 |
| October | 53% | 0.9 |
| November | 56% | 0.3 |
| December | 66% | 0.1 |
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 Healy need?
A normal year in Healy brings 13,273 heating degree days, 2.5 times the median U.S. place (5,373), and 15 cooling degree days, 98% fewer than the median (908). Ten months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 620 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 2,027 | 0 |
| February | 1,586 | 0 |
| March | 1,623 | 0 |
| April | 1,011 | 0 |
| May | 608 | 0 |
| June | 291 | 6 |
| July | 225 | 6 |
| August | 378 | 3 |
| September | 669 | 0 |
| October | 1,225 | 0 |
| November | 1,701 | 0 |
| December | 1,930 | 0 |
| Year (annual) | 13,273 | 15 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00503585. 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.
How does Healy's climate compare?
Healy is warmer than 30 of the other 84 places with their own NOAA record in Alaska, and wetter than 22. Across the 7,247 U.S. stations with normals, its annual mean of 28.6°F is warmer than 1%.
In the Köppen classification computed from these normals, Healy is Dfc: continental, no dry season, cool 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 Healy share this climate record?
Ferry 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.
- Ferry, AK33 people · 13 mi N
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 Healy's climate
What is the coldest month in Healy?
January, with a normal high of 8°F and a normal low of −9°F. The warmest is July (67°F by day, 49°F at night).
Does it snow in Healy?
Yes. NOAA publishes no 1991-2020 snowfall normal for Healy's NOAA station; the nearest record that keeps one, McKinley Park (10 miles away), records 77 inches of snow in a normal year.
What is the rainiest month in Healy?
July, with 3.04 in of precipitation in a normal year; the driest is March with 0.36 in.
What plant hardiness zone is Healy in?
The USDA's 2023 map puts Healy in zone 2a in ZIP code 99743.
How late can frost come in Healy?
In half of years the last 32°F night comes after May 27; in one year in ten it comes after June 10. Waiting until June 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Alaska climateThe statewide normals and every place in the state
- McKinley Park, AK11 miles from this station, 28.0°F a year
- Kobe Hill, AK26 miles from this station, 28.2°F a year
- Clear Sky, AK27 miles from this station, 27.2°F a year
- Cantwell, AK33 miles from this station, 27.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made