Weather forecast for 10 daysArnold, MO
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphSSE 158°
- Humidity: 55%
- UV index: 5
- Sunrise: 7:13 am CDT
- Sunset: 6:19 pm CDT
- details ▼
On Sunday, October 18, expect bright skies and plenty of sunshine.
Dramatic changes in temperature are forecasted, reaching a high of a breezy 66.2°F and falling to a low of an icy 37.4°F.
Today's peak temperature is forecasted to align with October's common high of 66.4°F.
Sunrise will be at 7:13 am and sunset at 6:19 pm; the daylight will last for 11h and 6min.
Dramatic changes in temperature are forecasted, reaching a high of a breezy 66.2°F and falling to a low of an icy 37.4°F.
Today's peak temperature is forecasted to align with October's common high of 66.4°F.
Sunrise will be at 7:13 am and sunset at 6:19 pm; the daylight will last for 11h and 6min.
10-day overview
Daily temperatures
Warmest period: Saturday - Sunday 81°C.
Coldest day: today 66°C.
Coldest day: today 66°C.
Chance of precipitation
Highest chance: Tuesday 18%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphSSE 158°
- Humidity: 55%
- UV index: 5
- Sunrise: 7:13 am CDT
- Sunset: 6:19 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 41°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 3mphSSE 153°
- Humidity: 55%
- UV index: 5
- Sunrise: 7:14 am CDT
- Sunset: 6:18 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 73°F
- 43°F
Mostly Sunny
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 3mphESE 113°
- Humidity: 54%
- UV index: 5
- Sunrise: 7:15 am CDT
- Sunset: 6:16 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 75°F
- 43°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 2mphS 179°
- Humidity: 51%
- UV index: 4
- Sunrise: 7:16 am CDT
- Sunset: 6:15 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 77°F
- 43°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphSSE 148°
- Humidity: 53%
- UV index: 4
- Sunrise: 7:17 am CDT
- Sunset: 6:14 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 77°F
- 46°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphSE 128°
- Humidity: 52%
- UV index: 4
- Sunrise: 7:18 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 81°F
- 48°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphSSE 151°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:19 am CDT
- Sunset: 6:11 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 81°F
- 50°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphSSW 202°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:20 am CDT
- Sunset: 6:10 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 77°F
- 48°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphSSW 192°
- Humidity: 50%
- UV index: 4
- Sunrise: 7:21 am CDT
- Sunset: 6:09 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 77°F
- 52°F
Mostly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 5mphSSE 158°
- Humidity: 52%
- UV index: 3
- Sunrise: 7:22 am CDT
- Sunset: 6:07 pm CDT
- details ▼
Over the next ten days, a combination of bright and dull weather is forecasted.
Rainfall is not anticipated in Arnold in the upcoming period.
Temperature fluctuation will be noticeable over the next several days. Maximum temperatures are forecasted between 66.2°F and 80.6°F, while the variation in nighttime lows will be also notably wide, as nighttime lows are forecast to fall between 37.4°F and 51.8°F.
Saturday and next Sunday, with the highest temperature of 80.6°F, will be the warmest days in Arnold; today is the coldest day, with a maximum temperature of 66.2°F.
Rainfall is not anticipated in Arnold in the upcoming period.
Temperature fluctuation will be noticeable over the next several days. Maximum temperatures are forecasted between 66.2°F and 80.6°F, while the variation in nighttime lows will be also notably wide, as nighttime lows are forecast to fall between 37.4°F and 51.8°F.
Saturday and next Sunday, with the highest temperature of 80.6°F, will be the warmest days in Arnold; today is the coldest day, with a maximum temperature of 66.2°F.
Updated: Oct 18, 2026 @ 05:03:52 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, expect sunny weather with a crisp, clear sky.
Today, the highest temperature will be 66.2°F, while the lowest temperature will be 37.4°F.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature will be uncommonly lower than the average low of 49.1°F.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature will be uncommonly lower than the average low of 49.1°F.
On Sunday, in Arnold, sunrise will be at 7:13 am and sunset at 6:19 pm (CDT).
In Arnold, the length of the day today will be 11h and 6min.
