Schertz Weather Forecast

Today 18 Sep
- 74
- 88
Decreasing Clouds
Sat 19 Sep
- 74
- 97
Hot
Sun 20 Sep
- 75
- 97
Hot
Mon 21 Sep
- 76
- 97
Hot
Tue 22 Sep
- 76
- 97
Slight Chance Thunderstorms
Wed 23 Sep
- 76
- 97
Hot
Thu 24 Sep
- 75
- 96
Partly Sunny

Today 18 Sep
1. 12 am
2. 1 am
3. 2 am
4. 3 am
5. 4 am
6. 5 am
7. 6 am
8. 7 am
9. 8 am
10. 9 am
11. 10 am
12. 11 am
13. 12 pm
14. 1 pm
15. 2 pm
16. 3 pm
17. 4 pm
18. 5 pm
19. 6 pm
20. 7 pm
21. 8 pm
22. 9 pm
23. 10 pm
24. 11 pm
Sat 19 Sep
1. 12 am
2. 1 am
3. 2 am
4. 3 am
5. 4 am
6. 5 am
7. 6 am
8. 7 am
9. 8 am
10. 9 am
11. 10 am
12. 11 am
13. 12 pm
14. 1 pm
15. 2 pm
16. 3 pm
17. 4 pm
18. 5 pm
19. 6 pm
20. 7 pm
21. 8 pm
22. 9 pm
23. 10 pm
24. 11 pm
Sun 20 Sep
1. 12 am
2. 1 am
3. 2 am
4. 3 am
5. 4 am
6. 5 am
7. 6 am
8. 7 am
9. 8 am
10. 9 am
11. 10 am
12. 1 pm
13. 4 pm
14. 7 pm
15. 10 pm
Mon 21 Sep
1. 1 am
2. 4 am
3. 7 am
4. 10 am
5. 1 pm
6. 4 pm
7. 7 pm
Tue 22 Sep
1. 1 am
2. 7 am
3. 1 pm
4. 7 pm
Wed 23 Sep
1. 1 am
2. 7 am
3. 1 pm
4. 7 pm
Thu 24 Sep
1. 1 am
2. 7 am
3. 1 pm
4. 7 pm

Today 18 Sep Guadalupe

Partly cloudy. Highs in the upper 90s. East Winds 5 to 10 Mph. Highest heat index Readings up to 105.

Tonight 18 Sep Guadalupe

Partly cloudy this Evening, then clearing. Lows in the lower 70s. Southeast Winds 5 to 10 Mph.

Schertz Temperature Statistics

September Temperature

Randolph Air Force Base (1.2 miles)

Lowest 26 January, 2026
21.2 °F
Average 2026
75.1 °F
Highest 27 August, 2026
103.6 °F
Lowest 23 August, 2026
71.8 °F
Average August
87 °F
Highest 27 August, 2026
103.6 °F
Lowest 11 September, 2026
75.7 °F
Average September
87.1 °F
Highest 11 September, 2026
103.6 °F

Climate (2021–2026)

Randolph Air Force Base (1.2 miles)

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Average Low 2021–2026
61.5 °F
Average 2021–2026
71.9 °F
Average High 2021–2026
83.2 °F

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Schertz Weather Forecast

Today 18 Sep Guadalupe

Tonight 18 Sep Guadalupe

Sat 19 Sep Guadalupe

Sat 19 Sep Guadalupe

Sun 20 Sep Guadalupe

Sun 20 Sep Guadalupe

Mon 21 Sep Guadalupe

Mon 21 Sep Guadalupe

Tue 22 Sep Guadalupe

Tue 22 Sep Guadalupe

Wed 23 Sep Guadalupe

Wed 23 Sep Guadalupe

Thu 24 Sep Guadalupe

Temperature Forecast NOAA

Temperature Real-Time

San Antonio Radar

National Satellite

National Synoptic

Schertz Temperature Statistics

September Temperature

Randolph Air Force Base (1.2 miles)

Lowest 26 January, 2026

Average 2026

Highest 27 August, 2026

Lowest 23 August, 2026

Average August

Highest 27 August, 2026

Lowest 11 September, 2026

Average September

Highest 11 September, 2026

Climate (2021–2026)

Randolph Air Force Base (1.2 miles)

Average Low 2021–2026

Average 2021–2026

Average High 2021–2026