Weather forecast for: Jefferson TX
Last Update: 6:31 am CDT Sep 20, 2026
Today: Mostly sunny and hot, with a high near 99. Heat index values as high as 102. South wind around 5 mph.
Tonight: Partly cloudy, with a low around 73. Calm wind becoming west around 5 mph after midnight.
Monday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 103. Calm wind becoming northwest around 5 mph. Chance of precipitation is 20%.
Monday Night: A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 72. Southeast wind around 5 mph becoming calm. Chance of precipitation is 10%.
Tuesday: Mostly sunny and hot, with a high near 97. Calm wind becoming northeast around 5 mph in the afternoon.
Tuesday Night: Partly cloudy, with a low around 70.
Wednesday: Mostly sunny, with a high near 93.
Wednesday Night: Mostly clear, with a low around 66.
Thursday: Mostly sunny, with a high near 92.
Thursday Night: Partly cloudy, with a low around 64.
Friday: Mostly sunny, with a high near 91.
Friday Night: Partly cloudy, with a low around 65.
Saturday: Partly sunny, with a high near 91.