Peak in August
Coolest in December
Heavy in October
Peak in dry season
Juneau Monthly Weather Guide
Click any month to explore daily weather forecasts
January
February
March
April
May
June
July
August
September
October
November
December
Essential Travel Info for Juneau
Currency
USD
$ United States dollar
Language
English
Driving
Right side
Safety
Moderate Safety
GPI: 2.44
Best Time to Visit Juneau
Location, climate overview & historical trends
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📍 58.3019° N, 134.4197° W
Open in Google MapsJuneau is a prominent destination in United States.
Located at 58.30°N latitude,Juneau experiences a subarctic climate with cold winters and mild summers.
Based on 30 years of data, August is the warmest month (avg. 17°C), while December is the coolest. October sees the most rain (66% chance), making May the driest month.
Historical Climate Trend
30-Year Analysis+1.95°C
Total over 30 years
+0.65°C
Per decade
Linear regression analysis of historical maximum temperatures for Juneau, based on 1995-2024 satellite data from NASA POWER.
Best Time to Visit
NASA POWER Data (1991-2021)Dry Season
Best months to visit
7°C
Avg High
Based on 30 years of NASA satellite data,Juneau receives approximately 2,277mm of rainfall annually. These months offer optimal temperatures and minimal rain probability for your visit.
Climate Trends
EXCLUSIVE1995-2040 Temperature Trend
1995 Avg
6.3°
2024 Avg
7.8°
2040 Proj
8.3°
+0.65°C
per decade (observed)
+0.32°C
per decade (CMIP6)
🌡️ Juneau has warmed by +1.9°C since 1995. By 2040, an additional +0.5°C is projected (based on CMIP6 rate of 0.316°C/decade), for a total of +2.5°C from 1995 baseline.
NASA POWER (1995-2024) + CMIP6 (CMCC_CM2_VHR4, EC_Earth3P_HR, FGOALS_f3_H, HiRAM_SIT_HR, MRI_AGCM3_2_S, NICAM16_8S)
Travel Intelligence
Exclusive flight analytics & health data for Juneau
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Flight Connectivity Analysis
Airport traffic data & seasonal patterns
Quieter airport
0
slots per day
Peak
Aug
Low
Oct
Monthly Traffic Distribution
Key Connections
Health & Safety Advisory
CDC travel health recommendations
No Special Vaccinations Required
Standard travel precautions apply
Source: CDC Travelers' Health
View Complete Health GuideJuneau Climate Data by Month
Historical temperature and precipitation averages
| Month | Avg High (°C) | Rain Probability (%) | Status |
|---|---|---|---|
| January | -1°C | 59% | ❄️ Cold |
| February | 0°C | 50% | ❄️ Cold |
| March | 1°C | 49% | ❄️ Cold |
| April | 6°C | 48% | 🌧️ Rainy |
| May | 11°C | 44% | 🌧️ Rainy |
| June | 15°C | 45% | 🌧️ Rainy |
| July | 17°C | 50% | 🌧️ Rainy |
| August | 17°C | 53% | 🌧️ Rainy |
| September | 13°C | 66% | 🌧️ Rainy |
| October | 7°C | 66% | 🌧️ Rainy |
| November | 1°C | 62% | ❄️ Cold |
| December | -1°C | 61% | ❄️ Cold |
Similar Climate Destinations
Discover destinations with weather similar to Juneau
Reykjavik
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Whistler
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These destinations share similar weather patterns with Juneau. Perfect alternatives if you're looking for the same climate in a different location.
Juneau Weather FAQ
When is the best time to visit Juneau?
Honestly, look for months with mild temperatures (20°C-25°C) and low rain chance. Based on historical data, summer months are usually great choices.
When is the hottest month in Juneau?
August is historically the hottest month in Juneau with average highs of 17°C.
When does it rain the most in Juneau?
October typically sees the highest probability of rain (66%).
Is Juneau expensive?
Prices vary by season. The "Perfect" weather months usually coincide with peak tourist season and higher prices, while the rainy or cold months offer better deals.