Climateby Month

Portland vs Salem weather

Portland, OR and Salem, OR · 44 mi apart

July highs: 80°F in Portland, 84°F in Salem (Salem is 4°F warmer). January highs: 47°F and 48°F (Salem is 1°F warmer). Portland has about 156 wet days a year, Salem about 148. Snow: 4.2 in a year in Portland, 2.9 in in Salem.

Portland, OR

30°40°50°60°70°80°90° January: normal high 47°F (8°C), low 37°F (3°C) February: normal high 51°F (11°C), low 39°F (4°C) March: normal high 56°F (13°C), low 41°F (5°C) April: normal high 61°F (16°C), low 44°F (7°C) May: normal high 68°F (20°C), low 49°F (9°C) June: normal high 73°F (23°C), low 53°F (12°C) July: normal high 80°F (27°C), low 58°F (14°C) August: normal high 81°F (27°C), low 59°F (15°C) 81° 59° September: normal high 75°F (24°C), low 55°F (13°C) October: normal high 63°F (17°C), low 48°F (9°C) November: normal high 52°F (11°C), low 42°F (6°C) December: normal high 46°F (8°C), low 37°F (3°C) 46° 37° JFMAMJJASOND

Best months: June

Salem, OR

30°40°50°60°70°80°90° January: normal high 48°F (9°C), low 36°F (2°C) February: normal high 52°F (11°C), low 36°F (2°C) March: normal high 57°F (14°C), low 38°F (3°C) April: normal high 62°F (17°C), low 41°F (5°C) May: normal high 69°F (21°C), low 46°F (8°C) June: normal high 75°F (24°C), low 51°F (11°C) July: normal high 84°F (29°C), low 55°F (13°C) 84° 55° August: normal high 84°F (29°C), low 55°F (13°C) September: normal high 78°F (26°C), low 51°F (11°C) October: normal high 65°F (18°C), low 44°F (7°C) November: normal high 54°F (12°C), low 39°F (4°C) December: normal high 47°F (8°C), low 35°F (2°C) 47° 35° JFMAMJJASOND

Best months: June

Which city for what

  • Cooler summers: Portland (July high 80°F vs July high 84°F)
  • Longer growing season: Portland (247 frost-free days vs 212 frost-free days)

Listed only where the difference is at least 3°F in highs, 10 days a year or 3 in of snow.

Season by season

SeasonAvg high PortlandAvg high SalemWet days PortlandWet days Salem
Winter (Dec-Feb)48°F49°F5353
Spring (Mar-May)62°F62°F4845
Summer (Jun-Aug)78°F81°F1614
Fall (Sep-Nov)63°F65°F3837

Side by side over a year

PortlandSalem
Hot days (90°F+)1218
Freezing nights1849
Muggy days00
Comfortable days104101
Precipitation36.9 in40.1 in
Snowfall4.2 in2.9 in
Frost dateslast Mar 13, first Nov 19last Apr 3, first Nov 1
Daylight in June / December15.6 h / 8.8 h15.6 h / 8.8 h
Best monthsJuneJune

Day counts from each city's daily records, 1991-2020. Comfortable days: highs 65-80°F and dew point under 60°F.

Month by month

MonthHigh PortlandHigh SalemWet days PortlandWet days Salem
January47°F48°F1918
February51°F52°F1616
March56°F57°F1818
April61°F62°F1716
May68°F69°F1312
June73°F75°F98
July80°F84°F42
August81°F84°F43
September75°F78°F76
October63°F65°F1413
November52°F54°F1818
December46°F47°F1919

Both charts use the same temperature scale.

Where the numbers come from

  • Portland, OR: temperature from Portland Kgw-Tv (USC00356749), 0.7 mi WSW of the city center; precipitation from Portland Intl Airport (USW00024229). NOAA 1991-2020 normals and daily records.
  • Salem, OR: temperature from Salem Mcnary Fld (USW00024232), 3.1 mi SSE of the city center; precipitation from Salem Mcnary Fld (USW00024232). NOAA 1991-2020 normals and daily records.

Every station for each city, including humidity and frost, is listed on the city page. Methodology.