10-Day Weather Forecast - Portland, MO

Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 104.

Mostly clear. Lows in the mid 70s. South winds around 5 mph. Heat index values up to 102 early in the evening.

Sunny, hot with highs in the upper 90s. West winds around 5 mph. Heat index values up to 105.

Mostly clear. Lows in the lower 70s. Northeast winds around 5 mph. Heat index values up to 100 early in the evening.

Mostly clear. Highs in the mid 90s. Heat index values up to 100.

Mostly clear. Lows in the upper 60s. Heat index values up to 100.

Mostly clear. Highs in the mid 90s. Heat index values up to 100.

Mostly clear. Lows in the upper 60s. Heat index values up to 100.

Mostly clear. Highs in the mid 90s. Heat index values up to 100.

Mostly clear. Hot. Lows in the mid 70s. Heat index values up to 100.

Mostly clear. Hot. Highs in the upper 90s. Heat index values up to 100.

Partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent.

Partly cloudy. A slight chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 20 percent.

Clear. Low temperature around 73F. Dew point will be around 68F with an average humidity of 68%. Winds will be 2 mph from the S.

Sunny. High temperature around 88F. Dew point will be around 68F with an average humidity of 66%. Winds will be 2 mph from the SW.

Clear. Low temperature around 69F. Dew point will be around 67F with an average humidity of 72%. Winds will be 4 mph from the SE.

Sunny. High temperature around 87F. Dew point will be around 68F with an average humidity of 69%. Winds will be 5 mph from the S.

Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 69F. Dew point will be around 66F with an average humidity of 70%. Winds will be 3 mph from the S.