Climate Comfort Score
37/100
Below Average
Temperature, precipitation, and comfort score from NOAA NCEI 1991-2020 normals →
30-year climate normals from 1 weather station (1991-2020).
Portage Glacier V C, Alaska has an average annual temperature of 37°F and a climate comfort score of 37/100 (Below Average). Annual precipitation totals 159.3". Based on NOAA 30-year normals (1991–2020).
Avg Temperature
37°F (3°C)
Avg High
44°F
Avg Low
30°F
Annual Precip
159.3"
Comfort Score
37/100
Below Average
Climate Comfort Score
37/100
Below Average
Avg Annual Temperature
37°F
30-year mean (NOAA NCEI)
Annual Precipitation
159.3"
Liquid-equivalent total
PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Portage Glacier V C area.
How the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Portage Glacier V C captures average conditions across the spread shown — the most recent decade is warmer than the 30-year mean.
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 28°F (-2°C) | 16°F (-9°C) | 22°F (-6°C) | 13.8" | 24.1 | 0.0 |
| February | 31°F (-1°C) | 19°F (-7°C) | 25°F (-4°C) | 10.7" | 22.5 | 0.0 |
| March | 34°F (1°C) | 18°F (-8°C) | 26°F (-4°C) | 9.5" | 26.2 | 0.0 |
| April | 43°F (6°C) | 29°F (-2°C) | 36°F (2°C) | 12.3" | 19.1 | 0.0 |
| May | 52°F (11°C) | 36°F (2°C) | 44°F (7°C) | 11.9" | 9.6 | 0.0 |
| June | 60°F (15°C) | 43°F (6°C) | 51°F (11°C) | 7.5" | 1.2 | 0.0 |
| July | 62°F (17°C) | 47°F (8°C) | 54°F (12°C) | 7.2" | 0.0 | 0.0 |
| August | 60°F (16°C) | 45°F (7°C) | 52°F (11°C) | 10.8" | 0.3 | 0.0 |
| September | 54°F (12°C) | 40°F (4°C) | 47°F (8°C) | 22.8" | 5.7 | 0.0 |
| October | 43°F (6°C) | 31°F (0°C) | 37°F (3°C) | 18.9" | 15.0 | 0.0 |
| November | 33°F (0°C) | 22°F (-5°C) | 28°F (-2°C) | 16.3" | 22.7 | 0.0 |
| December | 31°F (-1°C) | 18°F (-8°C) | 25°F (-4°C) | 17.5" | 24.3 | 0.0 |
Average monthly rainfall
17.1 days with precipitation
15.6 days with precipitation
15.9 days with precipitation
15.9 days with precipitation
15.9 days with precipitation
14.5 days with precipitation
14.7 days with precipitation
17.4 days with precipitation
19.7 days with precipitation
20.9 days with precipitation
18.0 days with precipitation
18.5 days with precipitation
First Fall Freeze
September 12
50% probability date
Last Spring Freeze
May 27
50% probability date
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
10,152
Higher = more heating needed
Cooling Degree Days
1
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
The NOAA 1991–2020 climate normals describe Portage Glacier V C, Alaska as a location with an annual average temperature of 37°F, ranging from a mean daily high of 44°F to a mean daily low of 30°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USW00026492, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Portage Glacier V C receives roughly 159.3 inches of precipitation each year, predominantly as rainfall. Growing-season length varies with elevation and microclimate, with the last spring freeze near May 27 and the first fall freeze near September 12. For energy use, 10,152 heating degree days and 1 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Portage Glacier V C scores 37/100 (Below Average), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows — shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00026492. For informational purposes only.
Read our methodology — how this data is sourced, computed, and verified.