Arnold weather
At 7:15 PM local time it was cloudy and 17°C (63°F). Light rain for 2 of the next 24 hours (under 1 mm/h, 0.2 mm total) — cloudy, but fine to be out. Best months for weather: Apr–Oct. Arnold sits 183 m (600 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 Arnold, Missouri, United States.
Current conditions
- Clouds
- 100%
- Chance of rain
- 3%
- Rain
- 0.1 mm/h
Hourly Forecast
Light rain for 2 of the next 24 hours (under 1 mm/h, 0.2 mm total) — cloudy, but fine to be out
Daily Forecast
Best Time to Visit
Peak season Apr–OctOff season Dec–Feb
About Arnold weather
Is it raining in Arnold right now?
No. It’s cloudy and 17° right now. Light rain for 2 of the next 24 hours (under 1 mm/h, 0.2 mm total) — cloudy, but fine to be out.
What’s the weather like in Arnold this week?
Over the next 7 days, expect highs of 13–23° and lows of 10–18°. Rain is likely on 4 of 7 days (Tuesday, Wednesday, Thursday, Friday). The driest day looks like Monday.
Has it been raining in Arnold lately?
Barely. The past 7 days were mostly dry, with 0.0 mm of rain in total.
What should I pack for Arnold?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
Arnold weather by month
When is the best time to visit Arnold?
Based on weather alone, the best time to visit Arnold is Apr–Oct, according to NASA's 2001–2025 climate averages. Dec–Feb tends to be the least pleasant. Average highs run from 4°C (39°F) in January to 32°C (89°F) in July.
What is the rainiest month in Arnold?
May is the wettest month, with about 128 mm (5.0 in) of rain on average. January is the driest, with about 60 mm (2.4 in).
What is the hottest month in Arnold?
July is the warmest, with average highs of 32°C (89°F) and lows of 20°C (68°F). January is the coolest, with highs of 4°C (39°F) and lows of -6°C (21°F).
Does Arnold have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is May at about 128 mm (5.0 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