New York, NY 21° Los Angeles, CA 15° Chicago, IL 28° Houston, TX 28° Miami, FL 29° Phoenix, AZ 27° Seattle, WA 13° Denver, CO 22° Toronto, ON 21° Vancouver, BC 14°
WeatherLive › Texas › San Juan

San Juan, TX Weather (78589)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherSan Juan · 10:17 AM CDT
42° | 26°
31°C
Feels like 37°
Sunny
WindS 13 mph · Gusts 16 mph
Precip3% · –
Humidity64% · Dew point 24°
UV index11 Very high
Air Quality23 Good
Pressure29.94 inHg
Visibility6 mi
Sunrise / Sunset7:13 AM · 7:51 PM · 12h 38m

Weather map — San Juan

Full radar →
Now
31°
4%
13 mph
11:00
37°
2%
12 mph
12:00
38°
1%
12 mph
13:00
40°
1%
12 mph
14:00
42°
1%
12 mph
15:00
42°
0%
12 mph
16:00
40°
1%
14 mph
17:00
39°
1%
18 mph
18:00
38°
1%
20 mph
19:00
35°
1%
21 mph
20:00
33°
1%
20 mph
21:00
31°
3%
20 mph
22:00
29°
5%
18 mph
23:00
28°
9%
17 mph
00:00
28°
14%
16 mph
01:00
28°
19%
15 mph
02:00
28°
23%
14 mph
03:00
28°
23%
14 mph
04:00
28°
19%
13 mph
05:00
28°
12%
12 mph
06:00
27°
12%
11 mph
07:00
27°
16%
12 mph
08:00
27°
24%
11 mph
09:00
29°
19%
14 mph

Today · Wed 9/2

High 42°
3% / –

Sunny. Winds SE at 21 mph.

Tonight · Wed 9/2

Low 27°
3% / –

Sunny. Winds SE at 20 mph.

Tomorrow · Thu 9/3

40° | 27°
8% / –

Mostly cloudy. Winds SE at 21 mph.

7-day trend

San Juan · temperature + precipitation

10-day forecast

Updated 10:17 AM

Details & indices

Wind
13 mph S
Gusts 16 mph
Humidity
64%
Dew point 24°
Pressure
29.94 inHg
Rising
UV index
11 — Very high
High today
Air Quality
Good
AQI 23 · US EPA
Allergy
None detected
—
Visibility
6 mi
Clear view
Allergy — San Juan

🌿 Conditions right now

View all →
Birch
None
Grass
None
Oak
None
Alder
None
Hazel
None
Mugwort
None
Ragweed
None

Sun & moon

Sunrise7:13 AM
Sunset7:51 PM
Length of day12h 38m
Moonrise11:20 PM
Moonset12:33 PM
Moon phase🌗 Last Quarter · 69%
Next full moonSep 26 Harvest Moon
Latitude26.1892°N
Longitude-98.1553°E

Water temps nearby

View all →
South Padre Island (61 mi)87°
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Great
Line-drying weather
Grilling
Great
Fire up the grill
Running
Fair
Lace up outside
Patio
Great
Dinner outdoors
Nearby places in {{REGION}}
Houston
Mostly cloudy
28°
San Antonio
Sunny
28°
Dallas
Sunny
29°
Fort Worth
Sunny
29°
Austin
Sunny
29°
El Paso
Sunny
23°
Data sources · Wednesday, September 2
Where the San Juan forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 26.1892°N, -98.1553°.
NBM + global weather models
Updated: 10:17 AM
Weather in San Juan
Over the next 10 days San Juan tops out around 42° (Wednesday) and dips to 26° on the coolest night (Wednesday). About 0.82 in of precipitation is expected in total; the most likely wet day is Saturday (68% chance). Wind is the one to watch: gusts to 32 mph around Thursday. No watches or warnings are active for the area right now. Right now San Juan is running about 62° warmer than Kingsville. Longer view: continental plains — big swings and a spring severe-storm season.
San Juan, TX · Elev 108 ft · 26.19°N, 98.16°W · Texas · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 10:17 AM