10-Day Weather Forecast - San Juan, TX

Sunny hot with highs around 102. Southeast winds 5 to 10 mph. Heat index values up to 109.

Mostly clear. Lows in the upper 70s. Southeast winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 108 early in the evening.

Sunny hot with highs around 103. Southeast winds 5 to 10 mph. Heat index values up to 108.

Mostly clear. Lows in the upper 70s. Southeast winds 10 to 15 mph. Heat index values up to 107 early in the evening.

Sunny hot with highs around 101. Southeast winds 10 to 15 mph. Heat index values up to 109.

Mostly clear. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.

Mostly clear. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.

Mostly clear. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.

Mostly clear. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.

Mostly clear. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.

Mostly clear. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.

Mostly clear. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.

Mostly clear. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.

Clear. Low temperature around 80F. Dew point will be around 76F with an average humidity of 73%. Winds will be 13 mph from the SE.

Sunny. High temperature around 99F. Dew point will be around 76F with an average humidity of 64%. Winds will be 12 mph from the SE.

Clear. Low temperature around 79F. Dew point will be around 76F with an average humidity of 74%. Winds will be 13 mph from the SE.

Sunny. High temperature around 98F. Dew point will be around 77F with an average humidity of 67%. Winds will be 12 mph from the SE.

Clear with scattered thunderstorms. Chance of storms 35%. Low temperature around 79F. Dew point will be around 76F with an average humidity of 75%. Winds will be 12 mph from the SE.