Best time to visit Corvallis
The best time to visit Corvallis is May–September, judged on twenty years of weather records and the events worth going for.
Corvallis, Oregon, United States
°C
mm
- Average daily high and low
- Precipitation
- Good month
- Best month
- Made good or best by an event
| Month | Average daily high | Average daily low | Precipitation | Verdict |
|---|---|---|---|---|
| January | 8.5 °C / 47 °F | 2.1 °C / 36 °F | 171 mm / 6.7 in | neither best nor good |
| February | 9.8 °C / 50 °F | 2.3 °C / 36 °F | 135 mm / 5.3 in | neither best nor good |
| March | 12.3 °C / 54 °F | 3.5 °C / 38 °F | 161 mm / 6.3 in | neither best nor good |
| April | 15.2 °C / 59 °F | 5.1 °C / 41 °F | 108 mm / 4.3 in | neither best nor good |
| May | 19.3 °C / 67 °F | 7.9 °C / 46 °F | 64 mm / 2.5 in | best month |
| June | 23 °C / 73 °F | 10.7 °C / 51 °F | 36 mm / 1.4 in | best month |
| July | 28.4 °C / 83 °F | 12.9 °C / 55 °F | 6 mm / 0.2 in | best month |
| August | 28.4 °C / 83 °F | 13.2 °C / 56 °F | 9 mm / 0.3 in | best month |
| September | 24.7 °C / 76 °F | 11 °C / 52 °F | 41 mm / 1.6 in | best month |
| October | 17.6 °C / 64 °F | 7.2 °C / 45 °F | 100 mm / 3.9 in | good month |
| November | 11.2 °C / 52 °F | 4.2 °C / 40 °F | 170 mm / 6.7 in | neither best nor good |
| December | 7.8 °C / 46 °F | 2 °C / 36 °F | 199 mm / 7.8 in | neither best nor good |
Good and best months depend on more than temperature, rain and events. How they are chosen
Each activity on this page has its own good and best months, rated on twenty years of daily weather records. Which measures count, and how much, depends on the activity: humidity for exploring outdoors, wind for the beach, hiking and skiing, snow for skiing alone. Between them, the activities are rated on:
- Daytime highs
- Night-time lows
- How warm it feels
- Humidity
- How much of the day is sunny
- Hours of daylight
- Monthly rainfall
- How many days it rains
- Days of heavy rain
- Wind
- Snowfall and days with snow
- Major events, such as festivals
The chart shows the good and best months for exploring outdoors.
The event icon marks a month that an event lifts to good or best, such as a festival or a natural spectacle. Choose “Weather only” in the toolbar to rate the months on weather alone.
Best months by activity
Exploring outdoors
Mild days and nights, mostly dry and bright. The default for 'when should I go'.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: neither
- MMay: best
- JJune: best
- JJuly: best
- AAugust: best
- SSeptember: best
- OOctober: good
- NNovember: neither
- DDecember: neither
- Best
- May–September
- Good
- October
Why these months
May · best
In its favour: feels like (high) 18.5 °C / 65 °F, average daily high 19.3 °C / 67 °F, share of daylight that is sunny 73%, precipitation 64 mm / 2.5 in, days with heavy rain 2.4 days, wet days 8.8 days, average daily low 7.9 °C / 46 °F, relative humidity 72%.
June · best
In its favour: feels like (high) 22.6 °C / 73 °F, average daily high 23 °C / 73 °F, precipitation 36 mm / 1.4 in, share of daylight that is sunny 77%, days with heavy rain 0.9 days, wet days 6.1 days, average daily low 10.7 °C / 51 °F, relative humidity 67%.
July · best
In its favour: feels like (high) 28.3 °C / 83 °F, precipitation 6 mm / 0.2 in, share of daylight that is sunny 90%, wet days 1.2 days, days with heavy rain 0.1 days, average daily high 28.4 °C / 83 °F, average daily low 12.9 °C / 55 °F, relative humidity 59%.
August · best
In its favour: feels like (high) 28.1 °C / 83 °F, precipitation 9 mm / 0.3 in, share of daylight that is sunny 89%, wet days 1.8 days, days with heavy rain 0.1 days, average daily high 28.4 °C / 83 °F, average daily low 13.2 °C / 56 °F, relative humidity 59%.
September · best
In its favour: feels like (high) 23.5 °C / 74 °F, average daily high 24.7 °C / 76 °F, precipitation 41 mm / 1.6 in, share of daylight that is sunny 84%, wet days 5 days, days with heavy rain 1.4 days, average daily low 11 °C / 52 °F, relative humidity 65%.
October · good
In its favour: feels like (high) 16 °C / 61 °F, share of daylight that is sunny 70%, average daily high 17.6 °C / 64 °F, precipitation 100 mm / 3.9 in, days with heavy rain 3.5 days, wet days 10.8 days, average daily low 7.2 °C / 45 °F.
Against: relative humidity 77%.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: neither
- MMarch: neither
- AApril: good
- MMay: best
- JJune: best
- JJuly: good
- AAugust: good
- SSeptember: best
- OOctober: best
- NNovember: neither
- DDecember: neither
- Best
- May–June, September–October
- Good
- April, July–August
Why these months
April · good
In its favour: average daily high 15.2 °C / 59 °F, precipitation 108 mm / 4.3 in, feels like (high) 13.3 °C / 56 °F, average daily low 5.1 °C / 41 °F, share of daylight that is sunny 68%, daylight per day 13.5 h, days with heavy rain 3.8 days, wind (daily max) 13 km/h / 8 mph.
Against: wet days 14.3 days.
May · best
In its favour: average daily high 19.3 °C / 67 °F, precipitation 64 mm / 2.5 in, wet days 8.8 days, days with heavy rain 2.4 days, feels like (high) 18.5 °C / 65 °F, average daily low 7.9 °C / 46 °F, share of daylight that is sunny 73%, daylight per day 14.8 h, wind (daily max) 12 km/h / 8 mph.
June · best
In its favour: average daily high 23 °C / 73 °F, precipitation 36 mm / 1.4 in, wet days 6.1 days, days with heavy rain 0.9 days, average daily low 10.7 °C / 51 °F, share of daylight that is sunny 77%, daylight per day 15.5 h, feels like (high) 22.6 °C / 73 °F, wind (daily max) 13 km/h / 8 mph.
July · good
In its favour: precipitation 6 mm / 0.2 in, wet days 1.2 days, days with heavy rain 0.1 days, average daily low 12.9 °C / 55 °F, share of daylight that is sunny 90%, daylight per day 15.2 h, wind (daily max) 13 km/h / 8 mph.
Against: average daily high 28.4 °C / 83 °F, feels like (high) 28.3 °C / 83 °F.
August · good
In its favour: precipitation 9 mm / 0.3 in, wet days 1.8 days, days with heavy rain 0.1 days, average daily low 13.2 °C / 56 °F, share of daylight that is sunny 89%, daylight per day 14 h, wind (daily max) 12 km/h / 8 mph.
Against: average daily high 28.4 °C / 83 °F, feels like (high) 28.1 °C / 83 °F.
September · best
In its favour: precipitation 41 mm / 1.6 in, wet days 5 days, average daily high 24.7 °C / 76 °F, days with heavy rain 1.4 days, average daily low 11 °C / 52 °F, share of daylight that is sunny 84%, daylight per day 12.5 h, feels like (high) 23.5 °C / 74 °F, wind (daily max) 12 km/h / 7 mph.
October · best
In its favour: average daily high 17.6 °C / 64 °F, precipitation 100 mm / 3.9 in, feels like (high) 16 °C / 61 °F, average daily low 7.2 °C / 45 °F, share of daylight that is sunny 70%, wet days 10.8 days, days with heavy rain 3.5 days, daylight per day 11 h, wind (daily max) 12 km/h / 7 mph.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Hoodoo Ski Area, 110 km away.
Weather averages
Monthly averages over twenty years, 2006–2025. Highs, lows and precipitation are in the chart at the top.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels like (high) | 6 °C | 7.3 °C | 9.8 °C | 13.3 °C | 18.5 °C | 22.6 °C | 28.3 °C | 28.1 °C | 23.5 °C | 16 °C | 9.2 °C | 5.3 °C |
| Days with heavy rain | 6.6 days | 4.5 days | 6 days | 3.8 days | 2.4 days | 0.9 days | 0.1 days | 0.1 days | 1.4 days | 3.5 days | 6.5 days | 7.5 days |
| Time rain usually falls | 3 pm | 4 pm | 4 pm | 4 pm | 5 pm | 12 pm | 4 am | 9 am | 4 pm | 2 pm | 3 pm | 4 pm |
| Sunshine per day | 4.9 h | 5.9 h | 7.2 h | 9.2 h | 10.9 h | 12 h | 13.7 h | 12.5 h | 10.5 h | 7.6 h | 5.4 h | 4.3 h |
| Relative humidity | 87% | 83% | 80% | 75% | 72% | 67% | 59% | 59% | 65% | 77% | 86% | 88% |
Air quality
Averaged over a shorter period (2022–2025) than the twenty-year averages above, and not counted towards good or best months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air pollution (PM2.5) 2022–2025 | 5.9 µg/m³ | 6.3 µg/m³ | 6.2 µg/m³ | 5.7 µg/m³ | 5.4 µg/m³ | 4.7 µg/m³ | 3.7 µg/m³ | 6 µg/m³ | 6.9 µg/m³ | 7.3 µg/m³ | 8.3 µg/m³ | 6.2 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 9.5 µg/m³ | 10 µg/m³ | 10.1 µg/m³ | 9.4 µg/m³ | 8.2 µg/m³ | 7.1 µg/m³ | 5.5 µg/m³ | 10 µg/m³ | 10.5 µg/m³ | 11.3 µg/m³ | 13.2 µg/m³ | 11 µg/m³ |
- Good 15 µg/m³ or less
- Fair 15 to 25 µg/m³
- Moderate 25 to 37.5 µg/m³
- Poor 37.5 to 50 µg/m³
- Very poor 50 to 75 µg/m³
- Extremely poor over 75 µg/m³
Each figure is compared with the World Health Organization's guideline for a day's air, 15 µg/m³ or less, and with its interim targets above that. The words are ours: the WHO does not name its steps. The figures are modelled monthly averages, so single days can be well above them. The daily peak is the average of each day's highest hour, shaded on the same scale.