Weather forecast for 10 daysOld Mystic, CT
Weather forecast for the weekend
Sunday Oct 18, 2026
- 57°F
- 37°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 7mphNNE 29°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:03 am EDT
- Sunset: 6:02 pm EDT
- details ▼
Today, in Old Mystic, skies will stay clear and sunny.
The temperature will fluctuate from a high of a moderate 57.2°F to a low of a cold 37.4°F.
Today, the predicted peak temperature is set to be moderately lower than the typical October temperature of 61.7°F.
Sunrise was at 7:03 am and sunset will be at 6:02 pm; the daylight will last for 10h and 59min.
The temperature will fluctuate from a high of a moderate 57.2°F to a low of a cold 37.4°F.
Today, the predicted peak temperature is set to be moderately lower than the typical October temperature of 61.7°F.
Sunrise was at 7:03 am and sunset will be at 6:02 pm; the daylight will last for 10h and 59min.
10-day overview
Daily temperatures
Warmest day: Monday 26.10. 66°C.
Minimum temperature: 57°C.
Minimum temperature: 57°C.
Chance of precipitation
Highest chance: Thursday 24%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 57°F
- 37°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 7mphNNE 29°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:03 am EDT
- Sunset: 6:02 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 63°F
- 46°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 14mphNE 39°
- Humidity: 64%
- UV index: 4
- Sunrise: 7:04 am EDT
- Sunset: 6:01 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 64°F
- 45°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 16mphNNE 26°
- Humidity: 59%
- UV index: 3
- Sunrise: 7:05 am EDT
- Sunset: 5:59 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 57°F
- 43°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0.04"
- Wind: 17mphNE 35°
- Humidity: 68%
- UV index: 4
- Sunrise: 7:06 am EDT
- Sunset: 5:58 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 61°F
- 43°F
Mostly Sunny
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 12mphNNE 15°
- Humidity: 63%
- UV index: 4
- Sunrise: 7:07 am EDT
- Sunset: 5:56 pm EDT
- details ▼
- Friday
- Oct 23, 2026
- 57°F
- 37°F
Mostly Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 13mphNNE 19°
- Humidity: 53%
- UV index: 4
- Sunrise: 7:09 am EDT
- Sunset: 5:55 pm EDT
- details ▼
- Saturday
- Oct 24, 2026
- 57°F
- 36°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 9mphNNE 32°
- Humidity: 57%
- UV index: 4
- Sunrise: 7:10 am EDT
- Sunset: 5:53 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 61°F
- 39°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphNW 314°
- Humidity: 58%
- UV index: 3
- Sunrise: 7:11 am EDT
- Sunset: 5:52 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 66°F
- 45°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 7mphNW 311°
- Humidity: 59%
- UV index: 3
- Sunrise: 7:12 am EDT
- Sunset: 5:51 pm EDT
- details ▼
- Tuesday
- Oct 27, 2026
- 63°F
- 41°F
Partly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 9mphN 0°
- Humidity: 63%
- UV index: 3
- Sunrise: 7:13 am EDT
- Sunset: 5:49 pm EDT
- details ▼
Ten-day trends indicate that a combination of sun-filled and gloomy weather is predicted.
With a probability of 15%, rainfall is forecasted only for Wednesday. Forecasted precipitation will be minimal at 0.04".
In the coming days, the highest temperature will range between 57.2°F and 66.2°F, while the low temperature range extends from 35.6°F to 46.4°F.
The warmest day will be next Monday, with a maximum of 66.2°F; the coldest days will be Sunday, Wednesday, Friday and Saturday, with a maximum of 57.2°F.
With a probability of 15%, rainfall is forecasted only for Wednesday. Forecasted precipitation will be minimal at 0.04".
In the coming days, the highest temperature will range between 57.2°F and 66.2°F, while the low temperature range extends from 35.6°F to 46.4°F.
The warmest day will be next Monday, with a maximum of 66.2°F; the coldest days will be Sunday, Wednesday, Friday and Saturday, with a maximum of 57.2°F.
Updated: Oct 18, 2026 @ 11:52:52 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
Today, in Old Mystic, sunshine will likely continue with scattered clouds at most.
Today, the highest temperature in Old Mystic will be 57.2°F, while the lowest temperature will be 37.4°F.
The maximum temperature today will be slightly cooler than the average highest temperature in October. The lowest temperature will be significantly lower than the average low of 49.6°F.
The maximum temperature today will be slightly cooler than the average highest temperature in October. The lowest temperature will be significantly lower than the average low of 49.6°F.
On Sunday, in Old Mystic, sunrise was at 7:03 am and sunset will be at 6:02 pm (EDT).
In Old Mystic, the length of the day today will be 10h and 59min.
