San Juan Weather Forecast 15 Days, Weather in San Juan Today
Current weather conditions and 15 day weather forecast for San Juan, Texas, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
Current weather conditions at San Juan
| 15 December 2025 Monday 16.7 ° C / 62.1°F  Overcast |
Feels Like : 16.7 ° C / 62.1°F Humidity : % 78 Pressure : 1027 mb Wind Speed : 30.6 kmph / 19 miles from NNE  Visibility : 13 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15 day weather forecast for San Juan, TX, USA
Weather Forecast for next 15 Days for San Juan including weather warnings, temperature, rain, wind speed, cloud, snow, wind speed and wind direction, pressure and UV index.Here is weather for the next 15 days in San Juan, Texas state, US. To see the daily forecast, scroll to the table below.
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 14 December 2025 Sunday |  Moderate rain |
12.7 ° C (54.9°F) |
23.8 ° C (74.8°F) |
19.3 ° C (66.8°F) |
% 88 | 89% | 0.5 | Sunrise:07:12 AM Sunset: 05:43 PM |
Moonrise:02:32 AM Moonset: 02:02 PM Moon Phase ( Waning Crescent ) |
|
| 15 December 2025 Monday |  Patchy rain nearby |
9.2 ° C (48.6°F) |
13.8 ° C (56.8°F) |
11.7 ° C (53°F) |
% 54 | 79% | 0.6 | Sunrise:07:13 AM Sunset: 05:44 PM |
Moonrise:03:25 AM Moonset: 02:34 PM Moon Phase ( Waning Crescent ) |
|
| 16 December 2025 Tuesday | Overcast |
10.7 ° C (51.3°F) |
13.3 ° C (55.9°F) |
12.7 ° C (54.9°F) |
% 69 | 0% | 0.3 | Sunrise:07:14 AM Sunset: 05:44 PM |
Moonrise:04:19 AM Moonset: 03:09 PM Moon Phase ( Waning Crescent ) |
|
| 17 December 2025 Wednesday | Overcast |
13.8 ° C (56.8°F) |
18.6 ° C (65.4°F) |
16.8 ° C (62.3°F) |
% 83 | 0% | 1 | Sunrise:07:14 AM Sunset: 05:44 PM |
Moonrise:05:15 AM Moonset: 03:48 PM Moon Phase ( Waning Crescent ) |
|
| 18 December 2025 Thursday |  Sunny |
21.7 ° C (71.1°F) |
30.9 ° C (87.6°F) |
25.2 ° C (77.4°F) |
% 69 | 0% | 1 | Sunrise:07:15 AM Sunset: 05:45 PM |
Moonrise:06:10 AM Moonset: 04:33 PM Moon Phase ( Waning Crescent ) |
|
| 19 December 2025 Friday | Patchy rain nearby |
21.7 ° C (71.1°F) |
27.4 ° C (81.3°F) |
23.4 ° C (74.2°F) |
% 82 | 88% | 0 | Sunrise:07:15 AM Sunset: 05:45 PM |
Moonrise:07:05 AM Moonset: 05:23 PM Moon Phase ( New Moon ) |
|
| 20 December 2025 Saturday |  Partly Cloudy |
22.2 ° C (71.9°F) |
28.3 ° C (83°F) |
24.7 ° C (76.4°F) |
% 76 | 0% | 6 | Sunrise:07:16 AM Sunset: 05:46 PM |
Moonrise:07:57 AM Moonset: 06:17 PM Moon Phase ( New Moon ) |
|
| 21 December 2025 Sunday | Patchy rain nearby |
21.3 ° C (70.3°F) |
30.8 ° C (87.5°F) |
25.2 ° C (77.4°F) |
% 66 | 87% | 6 | Sunrise:07:16 AM Sunset: 05:46 PM |
Moonrise:08:45 AM Moonset: 07:15 PM Moon Phase ( Waxing Crescent ) |
|
| 22 December 2025 Monday | Partly Cloudy |
15.1 ° C (59.2°F) |
18 ° C (64.4°F) |
17.1 ° C (62.8°F) |
% 49 | 0% | 5 | Sunrise:07:17 AM Sunset: 05:47 PM |
Moonrise:09:28 AM Moonset: 08:13 PM Moon Phase ( Waxing Crescent ) |
|
| 23 December 2025 Tuesday | Overcast |
16.4 ° C (61.4°F) |
23.5 ° C (74.3°F) |
19.1 ° C (66.4°F) |
% 74 | 0% | 4 | Sunrise:07:17 AM Sunset: 05:47 PM |
Moonrise:10:06 AM Moonset: 09:11 PM Moon Phase ( Waxing Crescent ) |
|
| 24 December 2025 Wednesday | Patchy rain nearby |
18.8 ° C (65.8°F) |
26.1 ° C (79°F) |
22 ° C (71.6°F) |
% 81 | 0% | 5 | Sunrise:07:18 AM Sunset: 05:48 PM |
Moonrise:10:41 AM Moonset: 10:08 PM Moon Phase ( Waxing Crescent ) |
|
| 25 December 2025 Thursday | Patchy rain nearby |
20.4 ° C (68.7°F) |
25.4 ° C (77.7°F) |
22.1 ° C (71.9°F) |
% 82 | 88% | 5 | Sunrise:07:18 AM Sunset: 05:48 PM |
Moonrise:11:14 AM Moonset: 11:06 PM Moon Phase ( Waxing Crescent ) |
|
| 26 December 2025 Friday | Sunny |
18.2 ° C (64.8°F) |
27.4 ° C (81.3°F) |
22.1 ° C (71.8°F) |
% 69 | 0% | 6 | Sunrise:07:19 AM Sunset: 05:49 PM |
Moonrise:11:45 AM Moonset: No moonset Moon Phase ( Waxing Crescent ) |
|
| 27 December 2025 Saturday | Partly Cloudy |
20.2 ° C (68.3°F) |
28.9 ° C (84°F) |
23.5 ° C (74.2°F) |
% 72 | 0% | 6 | Sunrise:07:19 AM Sunset: 05:50 PM |
Moonrise:12:17 PM Moonset: 12:03 AM Moon Phase ( First Quarter ) |
|
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