Climate Chart of Juneau, USA

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

Climate overview

Temperature

Monthly mean temperature is lowest in February, at -2.5 °C, and reaches its highest point in July, at 15.2 °C. The mean across the calendar-month means is 5.6 °C; it is an unweighted summary, not a day-weighted annual average. These are monthly averages rather than daytime highs, so individual days may differ from the figures.

Rain

Mean daily rainfall is lowest in March, at 1.02 mm/day, and highest in September, at 11.31 mm/day. The unweighted mean across monthly means is 5.44 mm/day. These are daily average amounts, not monthly totals; they do not indicate how often rain falls or guarantee dry or wet weather on a given day.

Snow

Mean daily snowfall is highest in December, at 48.57 mm/day, while the unweighted mean across monthly means is 19.54 mm/day. These figures describe average daily snowfall amounts, not monthly totals; they do not establish the number of snowy days, snow depth, or how long snow remains on the ground.

Sunshine

Mean daily sunshine reaches its highest level in May, at 9.49 hours/day, and its lowest in December, at 1.28 hours/day. The unweighted mean across the calendar-month means is 5.56 hours/day. Sunshine duration describes average hours of sunshine, not day length, and does not establish how clear any particular day will be.

Best Travel Time Guide for Juneau, USA: Ideal Seasons and Weather Insights

For visitors prioritising lower average rainfall, March is the conditional option in the supplied figures, with mean daily rainfall of 1.02 mm/day. This does not guarantee dry days or show how frequently rain occurs, so keep plans flexible and bring rain protection; the highest mean daily rainfall is in September, at 11.31 mm/day. Those prioritising cooler monthly averages can look to February, when the monthly mean temperature is -2.5 °C; this is not a daytime maximum and cannot predict conditions on a specific outing. For outdoor sightseeing planned around sunshine duration, May has the highest mean daily sunshine at 9.49 hours/day, while December has the lowest at 1.28 hours/day. Sunshine hours are not day length, and snowfall averages do not establish snow cover or suitability for snow activities.

Climate Data Overview for Juneau, USA

Explore the comprehensive climate data for Juneau, 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.

• See also climate change in Juneau
• Explore the climate in USA