McGrath weather in December: McGrath, Alaska: normal highs, lows, rain and records for December
McGrath in December has a normal high of 6°F and a normal low of −10°F, a daily mean of −2°F, falling from 9°F on the 1st to 2°F by the 31st. Measurable precipitation falls on 12 days in a normal December, 1.21 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of −15°C and low of −23°C, 31 mm of precipitation and 45 cm of snow in December.
- NOAA stationMcGrath Airport
- Station IDUSW00026510
- Location62.96°N 155.61°W
- Elevation333 ft (102 m)
- Population284
- Jan 3° -14°
- Feb 15° -6°
- Mar 25° -1°
- Apr 43° 22°
- May 59° 38°
- Jun 69° 49°
- Jul 70° 52°
- Aug 64° 48°
- Sep 54° 38°
- Oct 35° 22°
- Nov 15° 1°
- Dec 6° -10°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is McGrath in December?
The normal high is 6°F and the normal low −10°F, for a daily mean of -2.3°F. December is 10.3°F cooler than November and 3.5°F warmer than January. December is the 11th warmest month of the year in McGrath and the 7th wettest. Across the month the normal high falls 7°F, from 9°F on December 1 to 2°F on December 31. From one year to the next December's mean temperature typically moves about 7.8°F either way (NOAA's standard deviation), so roughly two Decembers in three average between -10°F and 6°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 40%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 9°F | −6°F | 40% | 13% |
| December 8 | 8°F | −8°F | 39% | 12% |
| December 15 | 6°F | −10°F | 38% | 11% |
| December 22 | 4°F | −12°F | 37% | 11% |
| December 31 | 2°F | −14°F | 35% | 11% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 9°F | −6°F | 40% | 13% | 5 h 30 min |
| December 2 | 9°F | −6°F | 40% | 12% | 5 h 30 min |
| December 3 | 9°F | −6°F | 40% | 12% | 5 h 30 min |
| December 4 | 9°F | −6°F | 40% | 12% | 5 h 20 min |
| December 5 | 8°F | −7°F | 40% | 12% | 5 h 20 min |
| December 6 | 8°F | −7°F | 40% | 12% | 5 h 20 min |
| December 7 | 8°F | −7°F | 40% | 12% | 5 h 10 min |
| December 8 | 8°F | −8°F | 39% | 12% | 5 h 10 min |
| December 9 | 7°F | −8°F | 39% | 12% | 5 h 10 min |
| December 10 | 7°F | −8°F | 39% | 12% | 5 h |
| December 11 | 7°F | −8°F | 39% | 11% | 5 h |
| December 12 | 7°F | −9°F | 39% | 11% | 5 h |
| December 13 | 6°F | −9°F | 39% | 11% | 4 h 50 min |
| December 14 | 6°F | −9°F | 39% | 11% | 4 h 50 min |
| December 15 | 6°F | −10°F | 38% | 11% | 4 h 50 min |
| December 16 | 6°F | −10°F | 38% | 11% | 4 h 50 min |
| December 17 | 5°F | −10°F | 38% | 11% | 4 h 50 min |
| December 18 | 5°F | −10°F | 38% | 11% | 4 h 50 min |
| December 19 | 5°F | −11°F | 37% | 11% | 4 h 50 min |
| December 20 | 4°F | −11°F | 37% | 11% | 4 h 40 min |
| December 21 | 4°F | −11°F | 37% | 11% | 4 h 40 min |
| December 22 | 4°F | −12°F | 37% | 11% | 4 h 40 min |
| December 23 | 4°F | −12°F | 36% | 11% | 4 h 40 min |
| December 24 | 3°F | −12°F | 36% | 11% | 4 h 40 min |
| December 25 | 3°F | −13°F | 36% | 11% | 4 h 50 min |
| December 26 | 3°F | −13°F | 36% | 11% | 4 h 50 min |
| December 27 | 3°F | −13°F | 36% | 11% | 4 h 50 min |
| December 28 | 2°F | −14°F | 35% | 11% | 4 h 50 min |
| December 29 | 2°F | −14°F | 35% | 11% | 4 h 50 min |
| December 30 | 2°F | −14°F | 35% | 11% | 4 h 50 min |
| December 31 | 2°F | −14°F | 35% | 11% | 4 h 50 min |
- Normal high
- 6°FDecember average
- Normal low
- −10°FDecember average
- Precipitation
- 1.21 inmonth total
- Days with precipitation
- 120.01 inch or more
- Snowfall
- 17.9 inmonth total
- Nights at 32°F or colder
- 31
- Daylight
- 5 h 30 min to 4 h 50 minDecember 1 to December 31
- Sunshine
- 68%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00026510; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in McGrath in December?
On a given December day the chance of 0.01 inch or more is 38% on average, highest around December 1 (40%). In all, 1.21 in falls on 12 days of a normal December.
In a normal December in McGrath, 31 nights fall to freezing, 29 days stay below freezing all day and snowfall averages 17.9 inches.
Snow falls on 14 days in a normal December, and an inch or more covers the ground on 31 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00026510.
How humid and windy is McGrath in December?
At 3 p.m. the normal temperature is −3°F with 94% relative humidity and a dew point of −4°F; at 6 a.m. it is −4°F with 100% humidity. The wind averages 2.5 mph, most often from the north-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | −4°F | −4°F | 100% | 2.7 mph | 43% |
| 9 a.m. | −6°F | −6°F | 100% | 2.4 mph | 31% |
| noon | −4°F | −4°F | 98% | 2.3 mph | – |
| 3 p.m. | −3°F | −4°F | 94% | 2.4 mph | 23% |
| 6 p.m. | −2°F | −4°F | 94% | 2.5 mph | 39% |
| 9 p.m. | −5°F | −5°F | 100% | 2.6 mph | 39% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00026510. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for December in McGrath?
The warmest December temperature on McGrath's official record (since 1941) is 49°F, on December 29, 1977; the coldest is −67°F, on December 27, 1961. The wettest December brought 5.02 in (1990); the snowiest, 54.2 inches (1990).
The December mean against the 1991-2020 normal of -2.3°F: 2022 -6.1°F (−3.8), 2023 -7.5°F (−5.2), 2024 3.5°F (+5.8), 2025 -13.4°F (−11.1). 1 of 4 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | -6.1°F | −3.8°F | 1.06 in |
| 2023 | -7.5°F | −5.2°F | 0.81 in |
| 2024 | 3.5°F | +5.8°F | 1.00 in |
| 2025 | -13.4°F | −11.1°F | 0.83 in |
Source: records: ACIS, NWS threaded record MCGthr; recent months: ACIS, station USW00026510. Records and recent months use complete months only.
How does December in McGrath compare across Alaska?
Across the 85 places PlainClimate covers in Alaska, December normal highs run from −7°F in Chicken to 42°F in Sitka; McGrath's is 6°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.