Weather forecast for tomorrowUmatac, GU
Weather forecast for tomorrow
Monday Oct 19, 2026
- 82°F
- 79°F
Showers / Wind
- Precip. probability: 65%
- Precipitation: 0.51"
- Wind: 24mphSSE 149°
- Humidity: 88%
- UV index: 6
- Sunrise: 6:12 am ChST
- Sunset: 6:00 pm ChST
- details ▼
On Monday, in Umatac, showers and windy weather are also anticipated, particularly in the late afternoon.
The likelihood of rainfall for tomorrow is high, and precipitation will be moderate. A modest fluctuation in temperature is expected, achieving a maximum of a temperate 82.4°F and dipping to a minimum of a moderately hot 78.8°F.
The maximum heat index, which modifies the air temperature to account for humidity, is assessed at a humid 91.4°F. Note that heat index values are valued for light wind and location in the shade.
The forecasted daily high is projected to match October's typical maximum of 84.4°F.
Sunrise will be at 6:12 am and sunset at 6:00 pm; tomorrow's daylight will last for 11h and 48min.
The likelihood of rainfall for tomorrow is high, and precipitation will be moderate. A modest fluctuation in temperature is expected, achieving a maximum of a temperate 82.4°F and dipping to a minimum of a moderately hot 78.8°F.
The maximum heat index, which modifies the air temperature to account for humidity, is assessed at a humid 91.4°F. Note that heat index values are valued for light wind and location in the shade.
The forecasted daily high is projected to match October's typical maximum of 84.4°F.
Sunrise will be at 6:12 am and sunset at 6:00 pm; tomorrow's daylight will last for 11h and 48min.
Hourly overview
Hourly temperatures
Warmest period: 9 am - 3 pm 90°C.
Coldest hour: 3 am 86°C.
Coldest hour: 3 am 86°C.
Chance of precipitation
Highest chance: 12 am 97%.
Hourly weather forecast
- 12 am
- 81°F
- Feels like:88°F
Rain / Wind
- Precip. probability: 97%
- Precipitation: 0.16"
- Wind: 27mphSE 144°
- Humidity: 89%
- Pressure: 29.68"Hg
- Visibility: 5mi
- UV index: 0
- details ▼
- 2 am
- 79°F
- Feels like:86°F
Showers / Wind
- Precip. probability: 68%
- Precipitation: 0.12"
- Wind: 26mphSSE 147°
- Humidity: 91%
- Pressure: 29.68"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 4 am
- 79°F
- Feels like:86°F
Scattered Thunderstorms / Wind
- Precip. probability: 55%
- Precipitation: 0.08"
- Wind: 24mphSSE 148°
- Humidity: 93%
- Pressure: 29.71"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 6 am
- 79°F
- Feels like:88°F
Showers / Wind
- Precip. probability: 47%
- Precipitation: 0.04"
- Wind: 24mphSSE 149°
- Humidity: 91%
- Pressure: 29.74"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Sunrise: 6:12 am
- 8 am
- 81°F
- Feels like:90°F
Showers / Wind
- Precip. probability: 65%
- Precipitation: 0.04"
- Wind: 24mphSSE 149°
- Humidity: 89%
- Pressure: 29.8"Hg
- Visibility: 7mi
- UV index: 1
- details ▼
- 10 am
- 82°F
- Feels like:91°F
Showers / Wind
- Precip. probability: 62%
- Precipitation: 0.04"
- Wind: 24mphSSE 150°
- Humidity: 87%
- Pressure: 29.8"Hg
- Visibility: 7mi
- UV index: 4
- details ▼
- 12 pm
- 81°F
- Feels like:90°F
Showers / Wind
- Precip. probability: 64%
- Precipitation: 0.08"
- Wind: 24mphSSE 152°
- Humidity: 87%
- Pressure: 29.8"Hg
- Visibility: 7mi
- UV index: 6
- details ▼
- 2 pm
- 81°F
- Feels like:90°F
Showers / Wind
- Precip. probability: 62%
- Precipitation: 0.08"
- Wind: 23mphSSE 150°
- Humidity: 88%
- Pressure: 29.77"Hg
- Visibility: 7mi
- UV index: 4
- details ▼
- 4 pm
- 81°F
- Feels like:90°F
Showers
- Precip. probability: 62%
- Precipitation: 0.04"
- Wind: 19mphSSE 150°
- Humidity: 88%
- Pressure: 29.77"Hg
- Visibility: 7mi
- UV index: 1
- details ▼
- 6 pm
- 81°F
- Feels like:88°F
Showers
- Precip. probability: 54%
- Precipitation: 0.04"
- Wind: 17mphSE 143°
- Humidity: 89%
- Pressure: 29.8"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
Sunset: 6:00 pm
- 8 pm
- 81°F
- Feels like:88°F
Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 16mphSE 136°
- Humidity: 88%
- Pressure: 29.85"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 10 pm
- 81°F
- Feels like:88°F
Cloudy
- Precip. probability: 22%
- Precipitation: 0"
- Wind: 14mphSE 134°
- Humidity: 90%
- Pressure: 29.85"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, a combination of primarily rainy and occasionally cloudy and storm-filled weather is forecasted.
Rainfall is anticipated from 12 am to 7 pm. With moderate precipitation of 0.16", most rainfall is expected at 12 am.
The temperature difference will be indistinguishable, with the lowest temperature of 78.8°F and the highest temperature of 82.4°F. The feels-like temperature difference will be indistinguishable, with the lowest temperature of 86°F and the highest temperature of 91.4°F. The warmest part of the day will be around 10 am.
The high temperature is expected to be consistent with October's usual value of 84.4°F. The minimum temperature will be also slightly cooler than October's average low of 82.6°F.
Rainfall is anticipated from 12 am to 7 pm. With moderate precipitation of 0.16", most rainfall is expected at 12 am.
The temperature difference will be indistinguishable, with the lowest temperature of 78.8°F and the highest temperature of 82.4°F. The feels-like temperature difference will be indistinguishable, with the lowest temperature of 86°F and the highest temperature of 91.4°F. The warmest part of the day will be around 10 am.
The high temperature is expected to be consistent with October's usual value of 84.4°F. The minimum temperature will be also slightly cooler than October's average low of 82.6°F.
Updated: Oct 17, 2026 @ 18:57:06 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 Monday, brief showers and gusty winds are expected in the evening.
Moderate precipitation of 0.51" is predicted. The likelihood of rainfall is 65%.
Tomorrow, the maximum temperature will be 82.4°F, while the minimum temperature will be 78.8°F. The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is evaluated at 91.4°F.
The maximum temperature will be in line with the average highest temperature of 84.4°F in October. The lowest temperature will be relatively lower than the average low of 82.6°F.
The maximum temperature will be in line with the average highest temperature of 84.4°F in October. The lowest temperature will be relatively lower than the average low of 82.6°F.
On Monday, in Umatac, sunrise will be at 6:12 am and sunset at 6:00 pm (ChST).
In Umatac, the length of the day tomorrow will be 11h and 48min.





