Best time to visit Pasco
The best time to visit Pasco is April–June and September–October, judged on twenty years of weather records and the events worth going for.
Pasco, Washington, 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 | 5.3 °C / 42 °F | -1.2 °C / 30 °F | 37 mm / 1.5 in | neither best nor good |
| February | 8.6 °C / 47 °F | -0.1 °C / 32 °F | 27 mm / 1.1 in | neither best nor good |
| March | 14.4 °C / 58 °F | 3.5 °C / 38 °F | 29 mm / 1.1 in | good month |
| April | 19.5 °C / 67 °F | 6.7 °C / 44 °F | 20 mm / 0.8 in | best month |
| May | 25.5 °C / 78 °F | 11.5 °C / 53 °F | 17 mm / 0.7 in | best month |
| June | 29.6 °C / 85 °F | 15.3 °C / 60 °F | 15 mm / 0.6 in | best month |
| July | 35.3 °C / 96 °F | 18.7 °C / 66 °F | 2 mm / 0.1 in | neither best nor good |
| August | 33.7 °C / 93 °F | 17.6 °C / 64 °F | 4 mm / 0.2 in | good month |
| September | 27.9 °C / 82 °F | 13 °C / 55 °F | 9 mm / 0.3 in | best month |
| October | 18.7 °C / 66 °F | 7.2 °C / 45 °F | 26 mm / 1 in | best month |
| November | 10.1 °C / 50 °F | 2.3 °C / 36 °F | 35 mm / 1.4 in | neither best nor good |
| December | 4.9 °C / 41 °F | -1.2 °C / 30 °F | 40 mm / 1.6 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: good
- AApril: best
- MMay: best
- JJune: best
- JJuly: neither
- AAugust: good
- SSeptember: best
- OOctober: best
- NNovember: neither
- DDecember: neither
- Best
- April–June, September–October
- Good
- March, August
Why these months
March · good
In its favour: precipitation 29 mm / 1.1 in, share of daylight that is sunny 79%, days with heavy rain 0.1 days, wet days 7.5 days, average daily high 14.4 °C / 58 °F, relative humidity 60%.
Against: feels like (high) 10.7 °C / 51 °F, average daily low 3.5 °C / 38 °F.
April · best
In its favour: feels like (high) 15.8 °C / 60 °F, average daily high 19.5 °C / 67 °F, precipitation 20 mm / 0.8 in, share of daylight that is sunny 85%, wet days 5.2 days, days with heavy rain 0.1 days, relative humidity 46%, average daily low 6.7 °C / 44 °F.
May · best
In its favour: feels like (high) 22.8 °C / 73 °F, average daily high 25.5 °C / 78 °F, precipitation 17 mm / 0.7 in, share of daylight that is sunny 86%, wet days 4.3 days, days with heavy rain 0.1 days, average daily low 11.5 °C / 53 °F, relative humidity 39%.
June · best
In its favour: feels like (high) 27.5 °C / 82 °F, precipitation 15 mm / 0.6 in, share of daylight that is sunny 89%, wet days 2.8 days, days with heavy rain 0.3 days, average daily low 15.3 °C / 60 °F, relative humidity 37%.
Against: average daily high 29.6 °C / 85 °F.
August · good
In its favour: precipitation 4 mm / 0.2 in, share of daylight that is sunny 94%, wet days 0.9 days, days with heavy rain 0.1 days, average daily low 17.6 °C / 64 °F, relative humidity 36%.
Against: feels like (high) 32.1 °C / 90 °F, average daily high 33.7 °C / 93 °F.
September · best
In its favour: feels like (high) 25.5 °C / 78 °F, precipitation 9 mm / 0.3 in, share of daylight that is sunny 90%, wet days 2.5 days, days with heavy rain 0.1 days, average daily high 27.9 °C / 82 °F, average daily low 13 °C / 55 °F, relative humidity 46%.
October · best
In its favour: feels like (high) 15.8 °C / 60 °F, average daily high 18.7 °C / 66 °F, precipitation 26 mm / 1 in, share of daylight that is sunny 82%, wet days 6 days, days with heavy rain 0.3 days, relative humidity 62%, average daily low 7.2 °C / 45 °F.
Hiking and trekking
Cool enough to climb in, dry enough to enjoy, long enough days.
- JJanuary: neither
- FFebruary: good
- MMarch: best
- AApril: best
- MMay: best
- JJune: good
- JJuly: neither
- AAugust: neither
- SSeptember: good
- OOctober: best
- NNovember: best
- DDecember: neither
- Best
- March–May, October–November
- Good
- February, June, September
Why these months
February · good
In its favour: precipitation 27 mm / 1.1 in, days with heavy rain 0.1 days, average daily high 8.6 °C / 47 °F, wet days 7.8 days, share of daylight that is sunny 74%, wind (daily max) 16 km/h / 10 mph, average daily low -0.1 °C / 32 °F, daylight per day 10.4 h.
Against: feels like (high) 5 °C / 41 °F.
March · best
In its favour: average daily high 14.4 °C / 58 °F, precipitation 29 mm / 1.1 in, days with heavy rain 0.1 days, wet days 7.5 days, share of daylight that is sunny 79%, daylight per day 12 h, feels like (high) 10.7 °C / 51 °F, average daily low 3.5 °C / 38 °F, wind (daily max) 17 km/h / 11 mph.
April · best
In its favour: average daily high 19.5 °C / 67 °F, precipitation 20 mm / 0.8 in, wet days 5.2 days, days with heavy rain 0.1 days, feels like (high) 15.8 °C / 60 °F, average daily low 6.7 °C / 44 °F, share of daylight that is sunny 85%, daylight per day 13.6 h, wind (daily max) 18 km/h / 11 mph.
May · best
In its favour: precipitation 17 mm / 0.7 in, wet days 4.3 days, days with heavy rain 0.1 days, average daily high 25.5 °C / 78 °F, average daily low 11.5 °C / 53 °F, share of daylight that is sunny 86%, daylight per day 15 h, feels like (high) 22.8 °C / 73 °F, wind (daily max) 17 km/h / 11 mph.
June · good
In its favour: precipitation 15 mm / 0.6 in, wet days 2.8 days, days with heavy rain 0.3 days, share of daylight that is sunny 89%, daylight per day 15.7 h, average daily low 15.3 °C / 60 °F, wind (daily max) 17 km/h / 11 mph.
Against: average daily high 29.6 °C / 85 °F, feels like (high) 27.5 °C / 82 °F.
September · good
In its favour: precipitation 9 mm / 0.3 in, wet days 2.5 days, days with heavy rain 0.1 days, average daily low 13 °C / 55 °F, share of daylight that is sunny 90%, daylight per day 12.5 h, wind (daily max) 14 km/h / 8 mph, feels like (high) 25.5 °C / 78 °F.
Against: average daily high 27.9 °C / 82 °F.
October · best
In its favour: average daily high 18.7 °C / 66 °F, precipitation 26 mm / 1 in, wet days 6 days, days with heavy rain 0.3 days, feels like (high) 15.8 °C / 60 °F, average daily low 7.2 °C / 45 °F, share of daylight that is sunny 82%, daylight per day 10.9 h, wind (daily max) 15 km/h / 9 mph.
November · best
In its favour: precipitation 35 mm / 1.4 in, average daily high 10.1 °C / 50 °F, days with heavy rain 0.5 days, wet days 8.2 days, share of daylight that is sunny 70%, average daily low 2.3 °C / 36 °F, wind (daily max) 15 km/h / 9 mph, feels like (high) 6.8 °C / 44 °F.
Against: daylight per day 9.4 h.
An activity is listed only where it applies: skiing at ski destinations, beach and swimming at beach destinations. The nearest ski area is Bluewood, 98 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) | 1.9 °C | 5 °C | 10.7 °C | 15.8 °C | 22.8 °C | 27.5 °C | 33.7 °C | 32.1 °C | 25.5 °C | 15.8 °C | 6.8 °C | 1.4 °C |
| Days with heavy rain | 0.6 days | 0.1 days | 0.1 days | 0.1 days | 0.1 days | 0.3 days | 0.1 days | 0.1 days | 0.1 days | 0.3 days | 0.5 days | 0.5 days |
| Time rain usually falls | 2 pm | 7 am | 5 pm | 10 am | 9 am | 3 am | 2 pm | 8 am | 9 pm | 3 pm | 8 pm | 3 am |
| Sunshine per day | 5.9 h | 7.7 h | 9.4 h | 11.5 h | 12.9 h | 14 h | 14.5 h | 13.2 h | 11.3 h | 8.9 h | 6.6 h | 5.3 h |
| Relative humidity | 80% | 72% | 60% | 46% | 39% | 37% | 31% | 36% | 46% | 62% | 75% | 81% |
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 | 6.2 µg/m³ | 6.8 µg/m³ | 6.9 µg/m³ | 6.2 µg/m³ | 5.9 µg/m³ | 5.7 µg/m³ | 5.7 µg/m³ | 9.3 µg/m³ | 10.9 µg/m³ | 6.8 µg/m³ | 7.6 µg/m³ | 5.4 µg/m³ |
| Air pollution (PM2.5, daily peak) 2022–2025 | 10 µg/m³ | 11.2 µg/m³ | 11.2 µg/m³ | 9.7 µg/m³ | 9.1 µg/m³ | 8.9 µg/m³ | 8.8 µg/m³ | 14 µg/m³ | 16.5 µg/m³ | 10.1 µg/m³ | 12.2 µg/m³ | 9.3 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.