Climate Chart of Anchorage, Alaska, USA
Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023
For Anchorage, Alaska, USA, the climate data cover 2013–2023. The supplied monthly means describe a pronounced contrast between the coldest part of the year and the warmest: the lowest monthly mean is January at -6.8 °C, while the highest is July at 15.3 °C. Rainfall and snowfall figures are daily averages, and sunshine is expressed as average daily duration, so these measures describe typical monthly conditions rather than guaranteeing what any particular day will bring.
Climate overview
Temperature
Monthly mean temperatures reach their low in January, at -6.8 °C, and their high in July, at 15.3 °C. These are averages for each month, not daytime maximum temperatures, and they do not indicate how much temperatures may vary from day to day. Across the monthly means, the unweighted mean is 3.2 °C; it is not weighted by the number of days in each month.
Rain
Mean daily rainfall is lowest in February at 0.24 mm/day, making it a possible option for visitors prioritising a lower average daily amount. The highest monthly mean is in September at 3.94 mm/day, so packing rain protection is sensible when travelling then. These daily averages do not show how often rain falls or guarantee dry or wet days. The unweighted mean across monthly means is 1.52 mm/day, not a monthly total or a day-weighted annual average.
Snow
Mean daily snowfall reaches its highest monthly value in December at 11.21 mm/day. The unweighted mean across the monthly snowfall figures is 4.22 mm/day. These daily averages alone do not establish how many days have snow, snow depth or snow cover, and cannot indicate skiing conditions.
Sunshine
Average daily sunshine duration peaks in June at 12.50 hours/day and is lowest in December at 0.97 hours/day. These figures can help with planning outdoor sightseeing around typical daylight conditions, but sunshine duration is not the same as day length and does not promise clear skies on a particular date. The unweighted mean across the monthly figures is 6.92 hours/day.
Best Travel Time Guide for Anchorage, Alaska, USA: Ideal Seasons and Weather Insights
If cooler monthly averages are your priority, January is the relevant reference point, with a monthly mean temperature of -6.8 °C; this is not a daytime high or a forecast for each day. For a lower average daily rainfall criterion, February has the lowest mean at 0.24 mm/day, but that does not guarantee dry days or tell you how frequently rain occurs. Rain preparation matters when considering September, whose mean daily rainfall is 3.94 mm/day. For outdoor plans guided by typical sunshine, June has the highest mean daily duration at 12.50 hours/day, while December has the lowest at 0.97 hours/day. Sunshine hours are not day length, and neither average determines conditions on a specific visit; these separate criteria should not be treated as a single best-month ranking.
Climate Data Overview for Anchorage, Alaska, USA
Explore the comprehensive climate data for Anchorage, Alaska, USA. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.
| Month | Average: Temperature °C | Rain (mm) / day | Snow (mm) / day | Sunshine (h) / day |
|---|---|---|---|---|
| Jan | -6.8 | 0.47 | 8.07 | 2.08 |
| Feb | -6.1 | 0.24 | 10.01 | 4.16 |
| Mar | -3.7 | 0.32 | 6.16 | 7.53 |
| Apr | 1.7 | 0.44 | 2.54 | 10.15 |
| May | 8.5 | 1.23 | 0.61 | 11.39 |
| Jun | 13.4 | 1.41 | 0.00 | 12.50 |
| Jul | 15.3 | 2.47 | 0.00 | 11.25 |
| Aug | 14.3 | 3.61 | 0.00 | 8.62 |
| Sep | 9.6 | 3.94 | 0.38 | 6.71 |
| Oct | 3.3 | 2.75 | 2.01 | 4.91 |
| Nov | -4.0 | 0.88 | 9.66 | 2.78 |
| Dec | -6.6 | 0.53 | 11.21 | 0.97 |
| Average | 3.2 | 1.52 | 4.22 | 6.92 |