San Bernardino Weather in May

San Bernardino in May sees high daytime temperatures of 27°C (81°F) and nighttime lows of 12°C (54°F). With just 6.3 mm (0.2 in) of rainfall expected, it's a dry month overall.

Rainfall in San Bernardino in May

Past climate data indicates that roughly 2 days will see rain, totalling around 6.3 mm (0.2 in) for the month. Rain is scarce this month and when it does fall, it tends to be light. Unlikely to disrupt plans significantly.

Temperature in San Bernardino in May

If you're visiting San Bernardino in May, expect excellent temperatures with highs of 27°C (81°F) and overnight lows of 12°C (54°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in San Bernardino in May

With approximately 311 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

So this is a great month to visit if you prefer dry days with pleasant temperatures.