026
CXUS54 KEWX 020900
CLMSAT
CLIMATE REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO
235 AM CST FRI JAN 02 2026
...............................
..THE SAN ANTONIO CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1886 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
HIGHEST 81 12/26 89 12/30
LOWEST 34 12/09 32 12/12
AVG. MAXIMUM 69.4 64.7 4.7 70.4
AVG. MINIMUM 49.2 42.4 6.8 51.3
MEAN 59.3 53.5 5.8 60.9
DAYS MAX >= 90 0 0
DAYS MAX <= 32 0 0
DAYS MIN <= 32 0 1
DAYS MIN <= 0 0 0
PRECIPITATION (INCHES)
TOTALS 0.30 2.00 -1.70 0.57
DAILY AVG. 0.01 0.06 -0.05 0.02
DAYS >= .01 5 7
DAYS >= .10 2 3
DAYS >= .50 0 0
DAYS >= 1.00 0 0
GREATEST
24 HR. TOTAL 0.26 12/16 TO 12/17
SNOWFALL (INCHES)
TOTALS 0.0 0.1 -0.1 0.0
SINCE 7/1 0.0 0.1 -0.1 MM
DEGREE DAYS
HEATING TOTAL 228 369 -141 165
SINCE 7/1 306 591 -285 MM
COOLING TOTAL 57 14 43 47
SINCE 1/1 4032 3146 886 MM
............................................................
WIND (MPH)
AVERAGE WIND SPEED 6.9
HIGHEST WIND SPEED/DIRECTION 29/010 DATE 12/29
HIGHEST GUST SPEED/DIRECTION 43/010 DATE 12/28
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.57
NUMBER OF DAYS FAIR 7
NUMBER OF DAYS PC 13
NUMBER OF DAYS CLOUDY 11
AVERAGE RH (PERCENT) 65
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 13 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 14 FOG W/VIS <= 1/4 MILE 4
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
MONTHLY CLIMATE SUMMARY:
DECEMBER 2025 WAS THE 8TH WARMEST AND TIED FOR THE 20TH DRIEST ON RECORD.
YEARLY CLIMATE SUMMARY:
2025 WAS TIED FOR THE 2ND WARMEST ON RECORD AS WELL AS THE 66TH DRIEST YEAR
ON RECORD.
SEA LEVEL PRESSURE DATA:
HIGHEST SLP 30.55 ON THE 30TH
LOWEST SLP 29.75 ON THE 18TH
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: SAN ANTONIO
MONTH: DECEMBER
YEAR: 2025
LATITUDE: 29 31 N
LONGITUDE: 98 28 W
TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND
================================================================================
1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18
12Z AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR
================================================================================
1 50 42 46 -10 19 0 T 0.0 0 8.1 17 10 M M 9 1 27 360
2 56 35 46 -10 19 0 0.00 0.0 0 5.6 13 10 M M 4 19 20
3 58 37 48 -8 17 0 0.01 0.0 0 2.8 8 50 M M 8 1 12 50
4 57 46 52 -4 13 0 0.02 0.0 0 10.3 25 10 M M 10 1 38 10
5 55 45 50 -5 15 0 T 0.0 0 5.8 13 150 M M 9 16 180
6 78 48 63 8 2 0 0.00 0.0 0 6.2 13 170 M M 5 18 160
7 80 52 66 11 0 1 T 0.0 0 8.9 25 350 M M 4 1 31 350
8 66 40 53 -2 12 0 0.00 0.0 0 5.6 17 360 M M 0 24 10
9 67 34 51 -3 14 0 0.00 0.0 0 6.8 15 180 M M 0 22 210
10 75 43 59 5 6 0 0.00 0.0 0 6.5 20 10 M M 2 26 20
11 70 40 55 1 10 0 0.00 0.0 0 5.6 13 180 M M 1 16 180
12 75 55 65 11 0 0 T 0.0 0 3.8 12 240 M M 7 12 19 270
13 77 58 68 14 0 3 T 0.0 0 3.3 10 170 M M 7 12 14 180
14 65 40 53 -1 12 0 T 0.0 0 14.1 25 360 M M 8 1 36 360
15 58 38 48 -6 17 0 0.00 0.0 0 5.0 10 10 M M 8 15 10
16 60 42 51 -2 14 0 0.11 0.0 0 3.2 17 150 M M 9 13 23 140
17 66 59 63 10 2 0 0.15 0.0 0 4.3 13 170 M M 10 12 17 180
18 80 57 69 16 0 4 T 0.0 0 9.0 22 20 M M 5 1 30 30
19 69 41 55 2 10 0 0.00 0.0 0 7.3 15 180 M M 1 19 170
20 72 51 62 9 3 0 T 0.0 0 5.6 14 210 M M 5 128 18 200
21 76 52 64 11 1 0 0.00 0.0 0 4.6 13 360 M M 2 1 17 360
22 79 62 71 19 0 6 0.00 0.0 0 5.8 14 160 M M 8 18 20 150
23 80 67 74 22 0 9 0.00 0.0 0 9.0 14 160 M M 7 20 160
24 79 65 72 20 0 7 0.00 0.0 0 6.0 14 160 M M 6 1 20 160
25 79 65 72 20 0 7 0.00 0.0 0 6.7 15 220 M M 6 22 220
26 81 67 74 22 0 9 0.00 0.0 0 6.9 12 190 M M 6 18 190
27 80 68 74 22 0 9 0.00 0.0 0 9.1 17 130 M M 7 23 130
28 77 56 67 15 0 2 0.00 0.0 0 8.8 28 10 M M 8 43 10
29 56 43 50 -2 15 0 0.01 0.0 0 14.8 29 10 M M 10 41 10
30 61 41 51 -1 14 0 0.00 0.0 0 6.3 17 10 M M 5 31 10
31 69 35 52 0 13 0 0.00 0.0 0 6.8 14 220 M M 3 19 230
================================================================================
SM 2151 1524 228 57 0.30 0.0 212.6 M 180
================================================================================
AV 69.4 49.2 6.9 FASTST M M 6 MAX(MPH)
MISC ----> 29 10 43 10
================================================================================
NOTES:
# LAST OF SEVERAL OCCURRENCES
COLUMN 17 PEAK WIND IN M.P.H.
SYMBOLS USED IN COLUMN 16
1 = FOG OR MIST
2 = FOG REDUCING VISIBILITY TO 1/4 MILE OR LESS
3 = THUNDER
4 = ICE PELLETS
5 = HAIL
6 = FREEZING RAIN OR DRIZZLE
7 = DUSTSTORM OR SANDSTORM: VSBY 1/2 MILE OR LESS
8 = SMOKE OR HAZE
9 = BLOWING SNOW
X = TORNADO
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