Clear Sky, AK Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Clear Sky's primary NOAA station, CLEAR SKY.
The climate verdict for Clear Sky
Winter sets the terms in Clear Sky, Alaska. A pronounced 69.4°F seasonal swing and heating demand above twice the cooling total frame an annual average of 27°F. At 40/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 6% of scores.
- 27°F
- average temperature, NOAA 1991-2020 normal
- 40/100
- comfort score, above 6% of station-mapped location scores
- 14.1"
- yearly precipitation total
- 103 days
- frost-free growing season
Clear Sky: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00502015 · Clear Sky, AK 27°F mean · 14.1" precip
TEMP-COLD · RANK-COOL · PHOTO-FINISH · PRCP-DRY · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COLD 27°F
- RANK-COOL #69
- PHOTO-FINISH ≈ Delta
- PRCP-DRY 14.1"
- SWING-WIDE 69°F
- COMF-LOW 40/100
- LOAD-HEAT 13,762 HDD
- STN-1 USC00502015
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Delta, AK (+ 0.2 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every AK station list.
- Hot Mile 42 Steese, AK 28°F
- Clear Sky (this station) 27°F
- Cold Ester, AK 27°F
- Near Delta, AK 27°F
- Near Eielson Fld, AK 27°F
Clear Sky sits in Alaska, the #1 coldest U.S. state at 33.5°F statewide annual average - see all 50 coldest states ranked by NOAA normals
Climate Living Index · Clear Sky
Clear Sky: 6/100 · grade F
Clear Sky publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Clear Sky, not an official NOAA rating. Rankings still use Comfort Score 40/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 14.1 in · 20.9 from 35 in | 25/100 · F |
| Normal heat + freeze calendar | 228 calendar days | 2/100 · F |
| Annual temperature balance | 27.2°F · 40.3° from 67.5°F | 0/100 · F |
| Frost-free season | 103 days/year | 0/100 · F |
Clear Sky · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Clear Sky is a continental Köppen climate: Dfc
Coldest-month mean -7.9°F and warmest-month mean 61.5°F place this station in continental, no dry season, cool summer climates (Dfc). Class Dfc is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, cool summer.
- Köppen code
- Dfc
- Group
- Continental
- Warmest month
- 61.5°F
- Coldest month
- -7.9°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Clear Sky sits across the climate record
Three NOAA fields for Clear Sky's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 99%
- Among 6,861 stations, Clear Sky sits in the cooler third of annual means.
- Annual precipitation
- Drier than 85%
- Clear Sky's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Wider than 99%
- Warmest-to-coldest month gap for Clear Sky is large versus 6,861 complete station-years.
How Clear Sky compares across U.S. station-mapped locations
Clear Sky's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
40 6th percentile score exceeds 6% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). This entry sits in this band.
- 50–60: 1,329 station-mapped locations (21%). Above this entry.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 1°F (-17°C) | -17°F (-27°C) | -8°F (-22°C) | 0.6" | 31.0 | 0.0 |
| February | 13°F (-11°C) | -10°F (-23°C) | 1°F (-17°C) | 0.5" | 28.0 | 0.0 |
| March | 25°F (-4°C) | -2°F (-19°C) | 11°F (-12°C) | 0.4" | 30.6 | 0.0 |
| April | 45°F (7°C) | 18°F (-8°C) | 32°F (0°C) | 0.4" | 27.4 | 0.0 |
| May | 62°F (16°C) | 35°F (2°C) | 48°F (9°C) | 0.7" | 11.5 | 0.0 |
| June | 72°F (22°C) | 46°F (8°C) | 59°F (15°C) | 1.9" | 0.9 | 0.1 |
| July | 73°F (23°C) | 50°F (10°C) | 62°F (16°C) | 2.6" | 0.1 | 0.2 |
| August | 66°F (19°C) | 45°F (7°C) | 56°F (13°C) | 2.9" | 2.2 | 0.0 |
| September | 54°F (12°C) | 35°F (1°C) | 44°F (7°C) | 1.5" | 13.0 | 0.0 |
| October | 33°F (0°C) | 17°F (-8°C) | 25°F (-4°C) | 1.0" | 28.0 | 0.0 |
| November | 11°F (-12°C) | -6°F (-21°C) | 2°F (-16°C) | 0.9" | 30.0 | 0.0 |
| December | 6°F (-15°C) | -14°F (-26°C) | -4°F (-20°C) | 0.6" | 30.9 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 75°F around June 30, short of 90°F on every date, while 228 dates carry a normal low at or below freezing, the coldest -18°F near January 9.
The freezing stretch
The normal low stays at or below 32°F into May 7, then returns to freezing around September 23, covering 228 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
The widest day
April 14 carries the biggest normal gap between afternoon and dawn, 27°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Clear Sky.
Where Clear Sky Stands Nationally
Winters bite deep and often: the normal nightly low dips to freezing or below on around 228 nights a year, placing this among the most frost-prone tenth of ranked stations.
A drier-than-most normal water year — around 14 inches, below what four out of five ranked stations collect.
Clear Sky earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
Clear Sky runs a summer-peaked wet season
53% of Clear Sky's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is August at 2.9", on a wide 69.4°F gap between its warmest and coldest month. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: August, July, June, taking 53% of the annual total between them.
- Driest month: April at 0.4".
- Winter share: 12% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
Frost Dates & Growing Season
First Fall Freeze
September 4
50% probability date
Last Spring Freeze
May 24
50% probability date
Growing Season
103 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
13,762
Higher = more heating needed
Cooling Degree Days
37
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside AK closest to Clear Sky on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (27°F here).
- Cooke City, MT 34°F · 7.0°F off
- Crested Butte, CO 34°F · 7.0°F off
- Silver Gate, MT 34°F · 7.1°F off
- Stanley, ID 34°F · 7.2°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (14.1" here), excluding temperature-peer places.
- Levan, UT 14.1" · 0.0" off
- Wheatland, WY 14.1" · 0.0" off
- Brighton, CO 14.1" · 0.0" off
- Missoula, MT 14.1" · 0.0" off
Scarce-water calendar
Where Clear Sky's limited precipitation lands
heating led · dry · high swing
Winter and seasonal range jointly define this record. Clear Sky logs 13,762 heating degree days, more than twice its 37 cooling total, while the typical coldest-to-warmest-month gap reaches 69.4°F. The annual mean therefore compresses two materially different seasons.
Only about 103 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
July and January mark the typical warm and cold ends of the calendar in this dry, high-range record. The gap is 69.4°F, so a single annual figure is especially lossy; the annual average is 27°f. Compare monthly temperature and precipitation together before drawing a seasonal conclusion about Clear Sky.
Clear Sky's cold-season load does not imply a wet climate. Annual precipitation is 14.1 inches, which places the station in PlainClimate's dry range. Snowfall is not added to the interpretation because its annual value is missing. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
Clear Sky wettest normal
August
August concentrates the scarce annual total (14.1 inches).
Clear Sky driest normal
March
March is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Clear Sky's climate
How dry is Clear Sky? ▼
How cold does Clear Sky get in winter? ▼
How much energy does heating and cooling require in Clear Sky? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Clear Sky's primary station: CLEAR SKY (USC00502015). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Clear Sky; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Clear Sky comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.