Walnut weather
At 6:00 PM local time it was cloudy and 19°C (67°F). Mostly light, on-and-off rain; heavier around 2 AM, 3 AM, 4 AM, 5 AM (17.9 mm total). Best months for weather: Apr–Oct. Walnut sits 178 m (584 ft) above sea level, which keeps it cooler than the coast. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Walnut, California, United States.
Current conditions
- Clouds
- 100%
- Chance of rain
- 27%
- Rain
- 0.0 mm/h
Hourly Forecast
Mostly light, on-and-off rain; heavier around 2 AM, 3 AM, 4 AM, 5 AM (17.9 mm total)
Daily Forecast
Best Time to Visit
Peak season Apr–OctOff season Dec–Feb
About Walnut weather
Is it raining in Walnut right now?
No. It’s cloudy and 19° right now. Mostly light, on-and-off rain; heavier around 2 AM, 3 AM, 4 AM, 5 AM (17.9 mm total).
What’s the weather like in Walnut this week?
Over the next 7 days, expect highs of 19–27° and lows of 10–19°. Rain is likely on 2 of 7 days (Saturday, Sunday). The driest day looks like Monday.
Has it been raining in Walnut lately?
Barely. The past 7 days were mostly dry, with 0.3 mm of rain in total.
What should I pack for Walnut?
For the coming week, bring an umbrella or rain jacket, light, breathable clothes, sunscreen and a warm layer for the evenings.
Walnut weather by month
When is the best time to visit Walnut?
Based on weather alone, the best time to visit Walnut is Apr–Oct, according to NASA's 2001–2025 climate averages. Dec–Feb tends to be the least pleasant. Average highs run from 17°C (62°F) in December to 30°C (86°F) in August.
What is the rainiest month in Walnut?
February is the wettest month, with about 75 mm (3.0 in) of rain on average. August is the driest, with about 1 mm (0.0 in).
What is the hottest month in Walnut?
August is the warmest, with average highs of 30°C (86°F) and lows of 18°C (64°F). December is the coolest, with highs of 17°C (62°F) and lows of 7°C (44°F).
Does Walnut have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is February at about 75 mm (3.0 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months