Lazy Mountain, Alaska climate: Normal weather by month, frost dates and records
Lazy Mountain's normal year runs from 9°F January nights to 66°F July afternoons, with 18.0 inches of precipitation and 83 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 1.9°C, January lows of −13°C, July highs of 19°C, 457 mm of precipitation a year.
- NOAA stationLazy Mountain
- Station IDUSC00505464
- Location61.63°N 149.04°W
- Elevation733 ft (223 m)
- Population (census place)1,472
On October 14, the normal high in Lazy Mountain is 43°F and the normal low 27°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 Lazy Mountain.
- Jan 23° 9°
- Feb 29° 12°
- Mar 34° 14°
- Apr 46° 25°
- May 58° 35°
- Jun 64° 43°
- Jul 66° 48°
- Aug 63° 45°
- Sep 55° 37°
- Oct 42° 26°
- Nov 28° 15°
- Dec 24° 11°
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 Lazy Mountain each month?
July is the warmest month, with normal highs of 66°F; January the coldest, with normal lows of 9°F. The most precipitation falls in August (3.00 in), the least in April (0.52 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 23°F | 9°F | 15.8°F | 1.03 | 14.7 | 7 | <1 | 31 | 6 h 10 min |
| February | 29°F | 12°F | 20.2°F | 1.00 | 13.6 | 7 | <1 | 28 | 8 h 50 min |
| March | 34°F | 14°F | 23.7°F | 0.87 | 11.3 | 6 | <1 | 31 | 11 h 40 min |
| April | 46°F | 25°F | 35.6°F | 0.52 | 4.8 | 4 | <1 | 27 | 14 h 40 min |
| May | 58°F | 35°F | 46.3°F | 0.84 | 0.9 | 7 | <1 | 10 | 17 h 30 min |
| June | 64°F | 43°F | 53.4°F | 1.37 | 0.0 | 10 | <1 | <1 | 19 h 30 min |
| July | 66°F | 48°F | 56.8°F | 1.98 | 0.0 | 14 | <1 | <1 | 18 h 40 min |
| August | 63°F | 45°F | 54.1°F | 3.00 | 0.0 | 15 | <1 | <1 | 16 h |
| September | 55°F | 37°F | 45.8°F | 2.92 | 0.5 | 15 | <1 | 7 | 13 h |
| October | 42°F | 26°F | 33.9°F | 1.76 | 6.0 | 10 | <1 | 25 | 10 h 10 min |
| November | 28°F | 15°F | 21.5°F | 1.22 | 11.9 | 8 | <1 | 29 | 7 h 20 min |
| December | 24°F | 11°F | 17.7°F | 1.48 | 18.8 | 9 | <1 | 31 | 5 h 20 min |
| Year (annual) | 44°F | 27°F | 35.4°F | 17.99 | 82.5 | 112 | <1 | 218 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −5°C | −13°C | −9.0°C | 26 mm | 37 cm |
| February | −2°C | −11°C | −6.6°C | 25 mm | 35 cm |
| March | 1°C | −10°C | −4.6°C | 22 mm | 29 cm |
| April | 8°C | −4°C | 2.0°C | 13 mm | 12 cm |
| May | 14°C | 2°C | 7.9°C | 21 mm | 2 cm |
| June | 18°C | 6°C | 11.9°C | 35 mm | 0 cm |
| July | 19°C | 9°C | 13.8°C | 50 mm | 0 cm |
| August | 17°C | 7°C | 12.3°C | 76 mm | 0 cm |
| September | 13°C | 3°C | 7.7°C | 74 mm | 1 cm |
| October | 5°C | −3°C | 1.1°C | 45 mm | 15 cm |
| November | −2°C | −10°C | −5.8°C | 31 mm | 30 cm |
| December | −4°C | −12°C | −7.9°C | 38 mm | 48 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00505464; 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 Lazy Mountain?
Normal highs sit between 65°F and 85°F in July.
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 USC00505464.
When is the last frost in Lazy Mountain?
In Lazy Mountain, the last spring frost (32°F) comes after May 22 in half of years and after June 3 in one year in ten; the first autumn frost comes before September 16 in half of years and before September 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 221 year in 10 after June 3; 9 in 10 after May 9
- First autumn frost, half of years before
- September 161 year in 10 before September 1; 9 in 10 before September 28
NOAA puts the median frost-free season at 114 days, and the season without a hard freeze (28°F) at 143 days.
A hard freeze (28°F) comes after May 6 in half of springs and before September 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Lazy Mountain in zone 5a in ZIP code 99645. By the map's own method, the average of each year's coldest night over 1991-2020, Lazy Mountain's NOAA station is in zone 5a: the coldest night of a typical year reaches −17°F (29 complete years).
Frost dates for every NOAA station in Alaska · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00505464; 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 in Lazy Mountain?
In a normal year in Lazy Mountain, a 90°F day is rare, 218 nights fall to 32°F or colder and 112 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
- 218a normal year
- Days that stay below freezing
- 102high of 32°F or less
- Days with 0.01 inch of precipitation
- 112a normal year
- Days with 1 inch of snow or more
- 24a normal year
The highest temperature in this station's record (since 1984) is 85°F, on June 16, 2015; the lowest is −38°F, on January 29, 1989.
The wettest calendar year on that record is 2022, with 30.78 in; the snowiest season is 2023–24, with 137.4 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00505464; records: ACIS (NOAA Regional Climate Centers), station USC00505464. Records use complete months only; a month missing more than three days is left out.
How sunny is Lazy Mountain?
Over a year 64% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Lazy Mountain, 2.5 kWh per square metre a day. April is the sunniest month (70%) and October the cloudiest (55%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 57% | 0.3 |
| February | 59% | 0.9 |
| March | 68% | 2.4 |
| April | 70% | 4.0 |
| May | 66% | 5.0 |
| June | 65% | 5.3 |
| July | 63% | 4.8 |
| August | 63% | 3.8 |
| September | 61% | 2.4 |
| October | 55% | 1.1 |
| November | 55% | 0.4 |
| December | 56% | 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 Lazy Mountain need?
A normal year in Lazy Mountain brings 10,772 heating degree days, 2.0 times the median U.S. place (5,373), and 2 cooling degree days, 100% fewer than the median (908). Eleven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 510 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,525 | 0 |
| February | 1,255 | 0 |
| March | 1,282 | 0 |
| April | 882 | 0 |
| May | 580 | 0 |
| June | 347 | 1 |
| July | 257 | 1 |
| August | 337 | 0 |
| September | 575 | 0 |
| October | 963 | 0 |
| November | 1,305 | 0 |
| December | 1,466 | 0 |
| Year (annual) | 10,772 | 2 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00505464. 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 Lazy Mountain been warmer than normal lately?
2024 averaged 34.8°F, 0.6°F below the 1991-2020 normal of 35.4°F. 1 of the 3 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 35.8°F | +0.4°F | 30.78 | 120.8 |
| 2023 | 34.5°F | −0.9°F | 24.72 | 133.3 |
| 2024 | 34.8°F | −0.6°F | 20.72 | 75.1 |
Source: observed years: ACIS, station USC00505464. A year counts only with all twelve months complete.
How does Lazy Mountain's climate compare?
Lazy Mountain is warmer than 42 of the other 84 places with their own NOAA record in Alaska, and wetter than 32. Across the 7,247 U.S. stations with normals, its annual mean of 35.4°F is warmer than 2%.
In the Köppen classification computed from these normals, Lazy Mountain is Dsc: continental, dry-summer, 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.
Questions about Lazy Mountain's climate
What is the coldest month in Lazy Mountain?
January, with a normal high of 23°F and a normal low of 9°F. The warmest is July (66°F by day, 48°F at night).
Does it snow in Lazy Mountain?
Yes: 83 inches in a normal year, falling on 39 days with 0.1 inch or more, the most in December (18.8 inches).
What is the rainiest month in Lazy Mountain?
August, with 3.00 in of precipitation in a normal year; the driest is April with 0.52 in.
What plant hardiness zone is Lazy Mountain in?
The USDA's 2023 map puts Lazy Mountain in zone 5a in ZIP code 99645. By the same method at Lazy Mountain's NOAA station, the coldest night of a typical year reaches −17°F (29 years, 1991-2020): zone 5a.
How late can frost come in Lazy Mountain?
In half of years the last 32°F night comes after May 22; in one year in ten it comes after June 3. Waiting until June 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Alaska climateThe statewide normals and every place in the state
- Palmer, AK2 miles from this station, 37.1°F a year
- Ben's Farm, AK6 miles from this station, 36.9°F a year
- Sutton (1 mi W), AK7 miles from this station, 36.5°F a year
- Matanuska Experiment Farm, AK8 miles from this station, 36.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made