Petersburg, Alaska 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Overcast 65°F 18°C	Observed at: Petersburg, AK	Elevation: 33 ft | 10 m
	Last Updated: July 12, 1:30 PM Timezone: GMT -5/-4
	Sky Conditions: Overcast	Temperature: 65°F | 18°C
	Pressure: 30 in | 1016 mb	Dewpoint: 44°F | 7°C
	Humidity: 48%	Wind: SW 6 mph | SW 10 kph
	Feels Like: 62°F | 17°C	Visibility: 143.8 mi | 231.4 km
	Lat/Long: 56.8125 | -132.9556	Sunrise: 4:18 AM   Sunset: 9:37 PM

7 Day Graphical Forecast

Valid: 1:34 PM 7/12/2026

Today Overcast 65 |47 °F 19 |8 °C 12% Chance Precipitation Monday Light Drizzle 62 |45 °F 17 |7 °C 49% Chance Precipitation Tuesday Overcast 65 |48 °F 18 |9 °C 4% Chance Precipitation Wednesday Overcast 71 |49 °F 22 |9 °C 28% Chance Precipitation Thursday Light Drizzle 64 |51 °F 18 |11 °C 31% Chance Precipitation Friday Overcast 71 |48 °F 22 |9 °C 29% Chance Precipitation Saturday Light Drizzle 65 |52 °F 19 |11 °C 47% Chance Precipitation

7 Hour Graphical Forecast

Valid: 1:34 PM 7/12/2026

1 PM Overcast 64 °F 12% Chance Precipitation

2 PM Overcast 65 °F 12% Chance Precipitation

3 PM Mostly Clear 64 °F 10% Chance Precipitation

4 PM Mostly Clear 65 °F 8% Chance Precipitation

5 PM Partly Cloudy 65 °F 6% Chance Precipitation

6 PM Partly Cloudy 65 °F 4% Chance Precipitation

7 PM Mostly Clear 63 °F 2% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Petersburg, AK - (Fahrenheit & Celsius) Valid: 1:34 PM 7/12/2026 Today Overcast with a high near 65°F [19°C]. SW wind to around 7 mph [11 kph], with gusts to near 19 mph [31 kph]. Dewpoint near 44°F [7°C] with humidity of 100%. Pressure around 30.00 in [1016 mb]. UV Index: 4.7. Chance of precipitation 12% with QPF of 0.00 in [0.0 mm]. Tonight Overcast with a low around 47°F [8°C]. SW wind to around 7 mph [11 kph], with gusts to near 19 mph [31 kph]. Chance of precipitation 12% with QPF of 0.00 in [0.0 mm]. Monday Light Drizzle with a high near 62°F [17°C]. WSW wind to around 4 mph [6 kph], with gusts to near 11 mph [18 kph]. Dewpoint near 44°F [7°C] with humidity of 99%. Pressure around 30.00 in [1016 mb]. UV Index: 3.9. Chance of precipitation 49% with QPF of 0.03 in [0.7 mm]. Monday Night Light Drizzle with a low around 45°F [7°C]. WSW wind to around 4 mph [6 kph], with gusts to near 11 mph [18 kph]. Chance of precipitation 49% with QPF of 0.03 in [0.7 mm]. Tuesday Overcast with a high near 65°F [18°C]. NNW wind to around 6 mph [10 kph], with gusts to near 18 mph [29 kph]. Dewpoint near 44°F [7°C] with humidity of 93%. Pressure around 30.00 in [1016 mb]. UV Index: 4.9. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 48°F [9°C]. NNW wind to around 6 mph [10 kph], with gusts to near 18 mph [29 kph]. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 71°F [22°C]. W wind to around 6 mph [9 kph], with gusts to near 15 mph [24 kph]. Dewpoint near 44°F [7°C] with humidity of 95%. Pressure around 30.00 in [1016 mb]. UV Index: 5.7. Chance of precipitation 28% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 49°F [9°C]. W wind to around 6 mph [9 kph], with gusts to near 15 mph [24 kph]. Chance of precipitation 28% with QPF of 0.00 in [0.0 mm]. Thursday Light Drizzle with a high near 64°F [18°C]. NW wind to around 6 mph [10 kph], with gusts to near 19 mph [30 kph]. Dewpoint near 44°F [7°C] with humidity of 93%. Pressure around 30.00 in [1016 mb]. UV Index: 2.25. Chance of precipitation 31% with QPF of 0.01 in [0.3 mm]. Thursday Night Light Drizzle with a low around 51°F [11°C]. NW wind to around 6 mph [10 kph], with gusts to near 19 mph [30 kph]. Chance of precipitation 31% with QPF of 0.01 in [0.3 mm]. Friday Overcast with a high near 71°F [22°C]. WNW wind to around 8 mph [13 kph], with gusts to near 22 mph [36 kph]. Dewpoint near 44°F [7°C] with humidity of 96%. Pressure around 30.00 in [1016 mb]. UV Index: 3.95. Chance of precipitation 29% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 48°F [9°C]. WNW wind to around 8 mph [13 kph], with gusts to near 22 mph [36 kph]. Chance of precipitation 29% with QPF of 0.00 in [0.0 mm]. Saturday Light Drizzle with a high near 65°F [19°C]. SSW wind to around 6 mph [9 kph], with gusts to near 19 mph [30 kph]. Dewpoint near 44°F [7°C] with humidity of 98%. Pressure around 30.00 in [1016 mb]. UV Index: 2.55. Chance of precipitation 47% with QPF of 0.15 in [3.9 mm]. Saturday Night Light Drizzle with a low around 52°F [11°C]. SSW wind to around 6 mph [9 kph], with gusts to near 19 mph [30 kph]. Chance of precipitation 47% with QPF of 0.15 in [3.9 mm].

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7 Day and Night - QPF Forecast for Petersburg, AK

Today: 0.0 mm | 0.00 in

Tonight: 0.0 mm | 0.00 in

Monday: 0.7 mm | 0.03 in

Monday Night: 0.7 mm | 0.03 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

Thursday: 0.3 mm | 0.01 in

Thursday Night: 0.3 mm | 0.01 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 3.9 mm | 0.15 in

Saturday Night: 3.9 mm | 0.15 in

7 Day and Night - Maximum Wind Speed Forecast for Petersburg, AK

Today: SW @ 11 kph | 7 mph

Tonight: SW @ 11 kph | 7 mph

Monday: WSW @ 6 kph | 4 mph

Monday Night: WSW @ 6 kph | 4 mph

Tuesday: NNW @ 10 kph | 6 mph

Tuesday Night: NNW @ 10 kph | 6 mph

Wednesday: W @ 9 kph | 6 mph

Wednesday Night: W @ 9 kph | 6 mph

Thursday: NW @ 10 kph | 6 mph

Thursday Night: NW @ 10 kph | 6 mph

Friday: WNW @ 13 kph | 8 mph

Friday Night: WNW @ 13 kph | 8 mph

Saturday: SSW @ 9 kph | 6 mph

Saturday Night: SSW @ 9 kph | 6 mph

7 Day and Night - Maximum Humidity Forecast for Petersburg, AK

Today: 100 %

Tonight: 100 %

Monday: 99 %

Monday Night: 99 %

Tuesday: 93 %

Tuesday Night: 93 %

Wednesday: 95 %

Wednesday Night: 95 %

Thursday: 93 %

Thursday Night: 93 %

Friday: 96 %

Friday Night: 96 %

Saturday: 98 %

Saturday Night: 98 %

7 Day and Night - Snowfall Totals Forecast for Petersburg, AK

Today: 0.0 cm | 0.00 in

Tonight: 0.0 cm | 0.00 in

Monday: 0.0 cm | 0.00 in

Monday Night: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 0.0 cm | 0.00 in

Thursday: 0.0 cm | 0.00 in

Thursday Night: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

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