Crater Lake National Park weather in May
May in Crater Lake National Park: cold, rainy, with clean air — a great time to visit.
#6 of 12 months in Crater Lake National Park · #359 of 604 destinations to visit in May · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Crater Lake National Park climate normals — May
| Daytime high | 11°C / 52°F | 🧥 cold |
|---|---|---|
| Nighttime low | 1°C / 33°F | |
| Feels like (high) | 9°C / 48°F | |
| Rainfall | 86 mm / 3.4 in | 🌧 rainy |
| Rainy days | 14 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 0°C / 32°F | |
| Sunshine | 11.4 h/day | |
| Daylight | 14.7 h | |
| Wind | 14 km/h / 9 mph | |
| Snowfall | 22.6 cm / 8.9 in | |
| Air quality (US AQI) | 42 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Crater Lake National Park?
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Crater Lake National Park in May — FAQ
- Is May a good time to visit Crater Lake National Park?
- May in Crater Lake National Park: cold, rainy, with clean air — a great time to visit. It ranks #6 of 12 months for Crater Lake National Park on SeasonMap's comfort score (79/100).
- What is the weather like in Crater Lake National Park in May?
- In May, Crater Lake National Park averages a daily high of 11.2°C and a low of 0.6°C, with about 86.3 mm of rain over roughly 14.2 rainy days.
- What is the air quality in Crater Lake National Park in May?
- Crater Lake National Park has a mean US Air Quality Index of about 42 in May.
- Does it snow in Crater Lake National Park in May?
- Crater Lake National Park sees roughly 22.6 cm of snowfall in May.