Alpine, Alaska climate: Climate normals at a NOAA weather station
Alpine's normal year runs from −22°F January nights to 56°F July afternoons, with 8.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of −9.8°C, January lows of −30°C, July highs of 13°C, 206 mm of precipitation a year.
- NOAA stationAlpine
- Station IDUSC00500235
- Location70.35°N 150.93°W
- Elevation17 ft (5 m)
On October 23, the normal high in Alpine is 23°F and the normal low 12°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Alpine.
- Jan -10° -22°
- Feb -9° -21°
- Mar -4° -19°
- Apr 12° -2°
- May 31° 21°
- Jun 48° 34°
- Jul 56° 43°
- Aug 51° 39°
- Sep 40° 32°
- Oct 26° 17°
- Nov 9° -5°
- Dec -3° -14°
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 Alpine each month?
July is the warmest month, with normal highs of 56°F; January the coldest, with normal lows of −22°F. The most precipitation falls in July (1.40 in), the least in May (0.21 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | −10°F | −22°F | -15.9°F | 0.34 | – | <1 | 31 | 0 h |
| February | −9°F | −21°F | -15.1°F | 0.51 | – | <1 | 28 | 7 h 10 min |
| March | −4°F | −19°F | -11.9°F | 0.38 | – | <1 | 31 | 11 h 30 min |
| April | 12°F | −2°F | 4.6°F | 0.40 | – | <1 | 30 | 16 h 10 min |
| May | 31°F | 21°F | 25.5°F | 0.21 | – | <1 | 29 | 23 h |
| June | 48°F | 34°F | 40.9°F | 0.78 | – | <1 | 12 | 24 h |
| July | 56°F | 43°F | 49.4°F | 1.40 | – | <1 | 1 | 24 h |
| August | 51°F | 39°F | 44.7°F | 1.37 | – | <1 | 3 | 18 h 30 min |
| September | 40°F | 32°F | 35.8°F | 0.79 | – | <1 | 15 | 13 h 40 min |
| October | 26°F | 17°F | 21.6°F | 0.84 | – | <1 | 31 | 9 h 10 min |
| November | 9°F | −5°F | 2.1°F | 0.53 | – | <1 | 30 | 3 h 50 min |
| December | −3°F | −14°F | -8.6°F | 0.57 | – | <1 | 31 | 0 h |
| Year (annual) | 20°F | 8°F | 14.4°F | 8.12 | – | <1 | 271 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −23°C | −30°C | −26.6°C | 9 mm |
| February | −23°C | −30°C | −26.2°C | 13 mm |
| March | −20°C | −29°C | −24.4°C | 10 mm |
| April | −11°C | −19°C | −15.2°C | 10 mm |
| May | −1°C | −6°C | −3.6°C | 5 mm |
| June | 9°C | 1°C | 4.9°C | 20 mm |
| July | 13°C | 6°C | 9.7°C | 36 mm |
| August | 10°C | 4°C | 7.1°C | 35 mm |
| September | 4°C | 0°C | 2.1°C | 20 mm |
| October | −3°C | −8°C | −5.8°C | 21 mm |
| November | −13°C | −20°C | −16.6°C | 13 mm |
| December | −19°C | −26°C | −22.6°C | 14 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Colville Village (13 miles away), gets 58 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00500235; 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 Alpine?
No month's normal high reaches 65°F in Alpine: the warmest is July at 56°F.
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 USC00500235.
How hot and how cold does it get at Alpine?
In a normal year in Alpine, a 90°F day is rare and 271 nights fall to 32°F or colder.
- 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
- 271a normal year
- Days that stay below freezing
- 224high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00500235.
How many heating and cooling degree days does Alpine record?
A normal year at Alpine brings 18,406 heating degree days, 3.4 times the median U.S. place (5,373), and 2 cooling degree days, 100% fewer than the median (908). Twelve months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 140 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 2,509 | 0 |
| February | 2,244 | 0 |
| March | 2,384 | 0 |
| April | 1,810 | 0 |
| May | 1,225 | 0 |
| June | 723 | 0 |
| July | 485 | 2 |
| August | 631 | 0 |
| September | 878 | 0 |
| October | 1,345 | 0 |
| November | 1,888 | 0 |
| December | 2,283 | 0 |
| Year (annual) | 18,406 | 2 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00500235. 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 Alpine been warmer than normal?
2025 averaged 17.3°F, 2.9°F above the 1991-2020 normal of 14.4°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 13.1°F | −1.3°F | 5.11 |
| 2022 | 14.9°F | +0.5°F | 4.65 |
| 2023 | 18.3°F | +3.9°F | 5.91 |
| 2025 | 17.3°F | +2.9°F | 6.79 |
Source: observed years: ACIS, station USC00500235. A year counts only with all twelve months complete.
How does Alpine's climate compare?
Alpine is warmer than 2 of the 85 places with their own NOAA record in Alaska, and wetter than 2. Across the 7,247 U.S. stations with normals, its annual mean of 14.4°F is warmer than 0%.
In the Köppen classification computed from these normals, Alpine is ET: tundra. 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 Alpine's climate
What is the coldest month at Alpine?
January, with a normal high of −10°F and a normal low of −22°F. The warmest is July (56°F by day, 43°F at night).
Does it snow at Alpine?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Colville Village (13 miles away), records 58 inches of snow in a normal year.
What is the rainiest month at Alpine?
July, with 1.40 in of precipitation in a normal year; the driest is May with 0.21 in.
What plant hardiness zone is Alpine in?
The USDA's 2023 map puts Alpine in zone 2a in ZIP code 99789, the nearest ZIP area.
Nearby and next
- Alaska climateThe statewide normals and every place in the state
- Nuiqsut, AK9 miles from this station, 13.4°F a year
- Colville Village, AK14 miles from this station, 13.2°F a year
- Kuparuk, AK30 miles from this station, 13.5°F a year
- Deadhorse Airport, AK58 miles from this station, 13.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made