San Jacinto County, TX Weather Forecast
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Slight Chance Showers And Thunderstorms
Compare major city weather across San Jacinto County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of showers and thunderstorms. Partly sunny. High near 89, with temperatures falling to around 86 in the afternoon. Southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for San Jacinto County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in San Jacinto County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 18 to May 23, 2026
- Latest sync
- May 17, 2026 6:17 PM CDT
- Forecast office
- HGX
- Source
- NOAA / NWS
Daily Outlook
This Week in San Jacinto County
Monday looks like the warmest upcoming period in San Jacinto County at 89 degrees F.
Thursday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Monday at about 10 to 15 mph SE.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- May 17, 2026 6:17 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- HGX
- Radar station
- KHGX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 76. Southeast wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms after 1pm. Partly sunny. High near 89, with temperatures falling to around 85 in the afternoon. South wind 5 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 73. Chance of precipitation is 70%.
Showers and thunderstorms. Mostly cloudy, with a high near 85. Chance of precipitation is 90%.
Showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 90%.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms. Mostly cloudy, with a high near 84. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 80%.
Showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 80%.
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
May 18
|
Slight Chance Showers And Thunderstorms
|
89°F |
10 to 15 mph
SE
|
|
Monday Night
May 18
|
Slight Chance Showers And Thunderstorms
|
76°F |
5 to 15 mph
SE
|
|
Tuesday
May 19
|
Partly Sunny then Chance Showers And Thunderstorms
|
89°F |
5 to 10 mph
S
|
|
Tuesday Night
May 19
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
73°F |
0 to 10 mph
SE
|
|
Wednesday
May 20
|
Showers And Thunderstorms
|
85°F |
0 to 5 mph
SE
|
|
Wednesday Night
May 20
|
Showers And Thunderstorms then Chance Showers And Thunderstorms
|
71°F |
0 to 5 mph
SE
|
|
Thursday
May 21
|
Chance Showers And Thunderstorms
|
84°F |
0 to 5 mph
SE
|
|
Thursday Night
May 21
|
Showers And Thunderstorms
|
70°F |
0 mph
|
|
Friday
May 22
|
Showers And Thunderstorms
|
81°F |
0 to 5 mph
SE
|
|
Friday Night
May 22
|
Showers And Thunderstorms then Chance Showers And Thunderstorms
|
70°F |
0 mph
|
|
Saturday
May 23
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
83°F |
0 to 5 mph
SE
|
|
Saturday Night
May 23
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
70°F |
0 mph
|
Major City Forecasts
Live forecast snapshots for major cities across San Jacinto County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in San Jacinto County.
Largest mapped city population in this region: 2,424.
