When to go · St. Helens, Oregon
St. Helens, Oregon, month by month
The best months for St. Helens, Oregon: Sep, Oct. Months to avoid: Jan, Feb, Dec.
Month by month
- JanuaryAvoidListed as a month to avoid: Dec–Feb (cold, limited daylight).7 °C (45 °F) / 0 °C (32 °F), 12 rain days45 °F (7 °C) / 32 °F (0 °C), 12 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Dec–Feb (cold, limited daylight).9 °C (48 °F) / 1 °C (34 °F), 10 rain days48 °F (9 °C) / 34 °F (1 °C), 10 rain daysCrowds: Low · 1 festival or holiday
- MarchGoodOutside the best window (Sep–Oct). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.13 °C (55 °F) / 3 °C (37 °F), 9 rain days55 °F (13 °C) / 37 °F (3 °C), 9 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGoodOutside the best window (Sep–Oct). Across United States: Good month for the Southwest, Washington cherry blossoms, the South; mountain roads still closed.16 °C (61 °F) / 6 °C (43 °F), 7 rain days61 °F (16 °C) / 43 °F (6 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- MayGoodOutside the best window (Sep–Oct). Across United States: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.20 °C (68 °F) / 10 °C (50 °F), 6 rain days68 °F (20 °C) / 50 °F (10 °C), 6 rain daysCrowds: Medium · 1 festival or holiday
- JuneGoodOutside the best window (Sep–Oct). Across United States: Rockies and northern parks open; desert heat builds; hurricane season starts. Book parks months ahead.24 °C (75 °F) / 13 °C (55 °F), 5 rain days75 °F (24 °C) / 55 °F (13 °C), 5 rain daysCrowds: High
- JulyMixedOutside the best window (Sep–Oct). Across United States: Peak season: parks full, 4 July crowds, 40 °C (104 °F)+ in the desert, humid East. Alaska and the Pacific Northwest are at their best.Outside the best window (Sep–Oct). Across United States: Peak season: parks full, 4 July crowds, 104 °F (40 °C)+ in the desert, humid East. Alaska and the Pacific Northwest are at their best.27 °C (81 °F) / 15 °C (59 °F), 5 rain days81 °F (27 °C) / 59 °F (15 °C), 5 rain daysCrowds: High · 1 festival or holiday
- AugustMixedOutside the best window (Sep–Oct). Across United States: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.27 °C (81 °F) / 15 °C (59 °F), 6 rain days81 °F (27 °C) / 59 °F (15 °C), 6 rain daysCrowds: High
- SeptemberGreatInside St. Helens, Oregon's best window: Sep–Oct.23 °C (73 °F) / 12 °C (54 °F), 7 rain days73 °F (23 °C) / 54 °F (12 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside St. Helens, Oregon's best window: Sep–Oct.17 °C (63 °F) / 8 °C (46 °F), 9 rain days63 °F (17 °C) / 46 °F (8 °C), 9 rain daysCrowds: Medium
- NovemberMixedOutside the best window (Sep–Oct). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.11 °C (52 °F) / 3 °C (37 °F), 11 rain days52 °F (11 °C) / 37 °F (3 °C), 11 rain daysCrowds: Medium · 1 festival or holiday
- DecemberAvoidListed as a month to avoid: Dec–Feb (cold, limited daylight).7 °C (45 °F) / 1 °C (34 °F), 12 rain days45 °F (7 °C) / 34 °F (1 °C), 12 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in St. Helens, Oregon, side by side.
Verdict
Sep: Great
Oct: Great
Daytime high
Sep: 23 °C (73 °F)73 °F (23 °C)
Oct: 17 °C (63 °F)63 °F (17 °C)
Night low
Sep: 12 °C (54 °F)54 °F (12 °C)
Oct: 8 °C (46 °F)46 °F (8 °C)
Rain days
Sep: 7 (better)
Oct: 9
Crowds
Sep: Medium
Oct: Medium
Prices
Sep: Medium
Oct: Medium
Festivals listed
Sep: 1
Oct: 0
September: Inside St. Helens, Oregon's best window: Sep–Oct.
October: Inside St. Helens, Oregon's best window: Sep–Oct.
St. Helens, Oregon: figures are long-term averages from this guide, not a forecast.