Current weather conditions and 15 day weather forecast for San Marcos / Robert Lowman Municipal Airport, 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.
| 15 September 2026 Tuesday 28.4 ° C / 83.1°F ![]() Clear |
Feels Like : 29.7 ° C / 85.5°F Humidity : % 57 Pressure : 1014 mb Wind Speed : 27.7 kmph / 17.2 miles from SSE ![]() Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 14 September 2026 Monday | Sunny |
24.2 ° C (75.5°F) |
36.6 ° C (97.9°F) |
29.7 ° C (85.5°F) |
% 60 | 17% | 9.4 | Sunrise:07:15 AM Sunset: 07:38 PM |
Moonrise:10:52 AM Moonset: 09:40 PM Moon Phase ( Waxing Crescent ) |
|
| 15 September 2026 Tuesday | Sunny |
23.5 ° C (74.3°F) |
37.2 ° C (98.9°F) |
29.5 ° C (85.1°F) |
% 58 | 3% | 9.2 | Sunrise:07:16 AM Sunset: 07:37 PM |
Moonrise:11:57 AM Moonset: 10:21 PM Moon Phase ( Waxing Crescent ) |
|
| 16 September 2026 Wednesday | Sunny |
23.8 ° C (74.9°F) |
36.6 ° C (97.8°F) |
29 ° C (84.2°F) |
% 60 | 7% | 5.6 | Sunrise:07:16 AM Sunset: 07:36 PM |
Moonrise:12:59 PM Moonset: 11:06 PM Moon Phase ( First Quarter ) |
|
| 17 September 2026 Thursday | Overcast |
24.1 ° C (75.5°F) |
35.1 ° C (95.2°F) |
28.1 ° C (82.6°F) |
% 63 | 36% | 8 | Sunrise:07:17 AM Sunset: 07:35 PM |
Moonrise:01:59 PM Moonset: 11:57 PM Moon Phase ( First Quarter ) |
|
| 18 September 2026 Friday | Sunny |
23 ° C (73.4°F) |
35.6 ° C (96°F) |
28.5 ° C (83.3°F) |
% 55 | 17% | 9 | Sunrise:07:18 AM Sunset: 07:33 PM |
Moonrise:02:53 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 19 September 2026 Saturday | Sunny |
21.9 ° C (71.3°F) |
35.7 ° C (96.3°F) |
27.8 ° C (82°F) |
% 55 | 2% | 9 | Sunrise:07:18 AM Sunset: 07:32 PM |
Moonrise:03:40 PM Moonset: 12:51 AM Moon Phase ( First Quarter ) |
|
| 20 September 2026 Sunday | Sunny |
22.5 ° C (72.5°F) |
35.5 ° C (96°F) |
28.4 ° C (83.2°F) |
% 56 | 4% | 9 | Sunrise:07:19 AM Sunset: 07:31 PM |
Moonrise:04:22 PM Moonset: 01:48 AM Moon Phase ( Waxing Gibbous ) |
|
| 21 September 2026 Monday | Overcast |
23.9 ° C (75°F) |
33.1 ° C (91.5°F) |
27.8 ° C (82°F) |
% 57 | 37% | 8 | Sunrise:07:19 AM Sunset: 07:30 PM |
Moonrise:04:58 PM Moonset: 02:45 AM Moon Phase ( Waxing Gibbous ) |
|
| 22 September 2026 Tuesday | Light rain shower |
22.2 ° C (72°F) |
32.5 ° C (90.5°F) |
27.5 ° C (81.4°F) |
% 62 | 73% | 7 | Sunrise:07:20 AM Sunset: 07:28 PM |
Moonrise:05:30 PM Moonset: 03:41 AM Moon Phase ( Waxing Gibbous ) |
|
| 23 September 2026 Wednesday | Patchy rain nearby |
24.7 ° C (76.4°F) |
31.6 ° C (88.9°F) |
28 ° C (82.5°F) |
% 60 | 69% | 8 | Sunrise:07:20 AM Sunset: 07:27 PM |
Moonrise:05:59 PM Moonset: 04:37 AM Moon Phase ( Waxing Gibbous ) |
|
| 24 September 2026 Thursday | Sunny |
24.2 ° C (75.6°F) |
33.6 ° C (92.5°F) |
28.4 ° C (83.1°F) |
% 53 | 36% | 8 | Sunrise:07:21 AM Sunset: 07:26 PM |
Moonrise:06:26 PM Moonset: 05:31 AM Moon Phase ( Full Moon ) |
|
| 25 September 2026 Friday | Sunny |
22.8 ° C (73.1°F) |
32.9 ° C (91.2°F) |
27.2 ° C (81°F) |
% 39 | 1% | 8 | Sunrise:07:21 AM Sunset: 07:25 PM |
Moonrise:06:52 PM Moonset: 06:26 AM Moon Phase ( Full Moon ) |
|
| 26 September 2026 Saturday | Sunny |
21.4 ° C (70.6°F) |
33.5 ° C (92.3°F) |
26.9 ° C (80.4°F) |
% 37 | 2% | 8 | Sunrise:07:22 AM Sunset: 07:23 PM |
Moonrise:07:20 PM Moonset: 07:21 AM Moon Phase ( Full Moon ) |
|
| 27 September 2026 Sunday | Sunny |
21.6 ° C (70.8°F) |
34.1 ° C (93.4°F) |
27.3 ° C (81.1°F) |
% 51 | 3% | 8 | Sunrise:07:22 AM Sunset: 07:22 PM |
Moonrise:07:49 PM Moonset: 08:17 AM Moon Phase ( Waning Gibbous ) |
|