Big Bear Lake Weather in May
May in Big Bear Lake brings pleasant temperatures, with highs of 19°C (66°F) and nights dropping to 1°C (34°F). Rainfall is very low this month, averaging just 7.9 mm (0.3 in).
Rainfall in Big Bear Lake in May
On average, there are about 3 days with rain during this month, averaging 7.9 mm (0.3 in). When rain does fall, showers tend to be light and brief. Most days will be dry.
Temperature in Big Bear Lake in May
May tends to be one of the excellent months in Big Bear Lake, with 19°C (66°F) in the afternoon and 1°C (34°F) overnight. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 1°C (34°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August, September and October typically offer the best circumstances for Big Bear Lake.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Big Bear Lake's climate page.
Big Bear Lake Temperature in May
Min Temperature
1°C (34°F)
Max Temperature
19°C (66°F)
Chance of Rain
10%
Precipitation
7.9 mm (0.3 in)
Rainy days
3 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Big Bear Lake typically rise from around 23°C (73°F) at the start of May to approximately 27°C (81°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 11°C (52°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Big Bear Lake in May
Browse day-by-day weather records for Big Bear Lake spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Big Bear Lake historical weather extremes in May
The extremes listed below come from historical weather data collected in Big Bear Lake from 1976 through 2026.
- Nighttime temperatures dropped to -5°C (23°F) on May 12, 2022, marking the coldest May night on record.
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Big Bear Lake in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. With minimal rainfall expected, you can leave the rain gear at home.What To Do in Big Bear Lake in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Big Bear Lake's climate page.
See the full Big Bear Lake climate overview or explore weather in the United States of America.
