| NWS Forecast for: Petersburg Borough Issued by: National Weather Service Juneau, AK Last Update: 304 AM AKDT Fri Sep 25 2026 | |
| Today: Clear. Highs in the upper 50s. Light winds. Tonight: Increasing clouds. Slight chance of rain late. Lows around 40. East winds around 10 mph. Saturday: Mostly cloudy. Chance of rain in the morning, then rain likely in the afternoon. Highs in the mid 50s. East winds around 10 mph. Saturday Night: Rain. Rain may be heavy at times late. Lows in the lower 40s. Southeast winds 10 to 15 mph. Sunday: Rain. Rain may be heavy at times in the morning. Highs in the mid 50s. Southeast winds 10 to 15 mph. Sunday Night: Rain showers. Lows in the mid 40s. Monday: Rain showers. Highs in the mid 50s. Monday Night: Rain showers. Lows in the lower 40s. Tuesday: Rain showers. Highs in the mid 50s. Tuesday Night: Rain showers. Lows in the lower 40s. Wednesday: Rain showers. Highs in the mid 50s. Wednesday Night: Rain showers. Lows in the lower 40s. Thursday: Rain showers likely. Highs in the lower 50s. | |
| Zone Forecast: Petersburg Borough | |
Visit your local NWS office at: https://www.weather.gov/Juneau |