December 2015 weather data

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December 2015 was far warmer and much wetter than usual, there being no days of frost (or snow) at all; the average maximum temperature of 11.5°C was 3.4°C above the Ross average for December of 8.1°C. The maximum temperature exceeded 10°C on 24 days.

There were only 2 days when no rain was recorded and a further one when precipitation was recorded as 0.2 mm; the total rainfall was 236 mm, three times the Ross-on-Wye* average for December of 78.1 mm.

Compared with UK data for December, the Penallt mean temperature was 9.5°C, beating the UK figure of 8.0°C by 1.5°C, the long-term UK average being 3.9°C. The rainfall equivalents were 236 mm for Penallt, the UK average was 211 mm and the long-term UK average is 120 mm.

* Ross-on-Wye is the nearest Met Office station for which long term averages (1971-2000) are available.

Day by day data for December are given below:-


                   MONTHLY CLIMATOLOGICAL SUMMARY for DEC. 2015

NAME: Penallt 210   CITY:    STATE:  
ELEV:   210 m  LAT:  51° 48' 00" N  LONG:   2° 42' 00" W

                   TEMPERATURE (°C), RAIN  (mm), WIND SPEED (km/hr)

                                      HEAT  COOL        AVG
    MEAN                              DEG   DEG         WIND                 DOM
DAY TEMP  HIGH   TIME   LOW    TIME   DAYS  DAYS  RAIN  SPEED HIGH   TIME    DIR
------------------------------------------------------------------------------------
 1  11.2  12.2   14:00  10.2   18:30   7.1   0.0   1.2   2.1  20.9   13:30     W
 2  10.6  12.7   11:30   9.5    3:30   7.8   0.0   3.8   3.4  22.5   11:00    SE
 3  11.2  12.1   10:30   6.5   00:00   7.1   0.0  26.2   4.3  32.2   16:00    SE
 4   8.6  10.5   14:30   4.5    3:00   9.7   0.0   0.8   2.1  29.0   00:00     W
 5   9.9  10.6   14:00   9.1    3:00   8.4   0.0   0.0   4.7  32.2    7:00    SE
 6  11.2  12.1   13:00  10.1    1:30   7.2   0.0   4.4   2.3  30.6    2:00     W
 7  11.7  12.8   12:30  10.6   19:30   6.6   0.0   5.2   3.9  25.7   17:30    SE
 8   8.9  12.1    3:00   3.9   00:00   9.4   0.0   5.2   2.6  24.1    3:00     W
 9   7.5   9.7   14:00   3.9    0:30  10.8   0.0   0.0   2.6  24.1   14:00    SE
10   8.3   9.9    3:30   6.1   16:30  10.1   0.0   5.0   2.6  25.7    3:30     W
11   6.2   7.9   12:30   2.9   22:30  12.2   0.0   0.2   0.3  12.9    2:00     W
12   8.4  11.1   14:30   3.6    0:30   9.9   0.0  10.0   2.7  27.4   15:00     W
13   6.4   8.6   20:30   4.8    6:00  11.9   0.0  11.6   0.2  11.3    3:30   ENE
14   8.2   9.4   00:00   7.5    6:00  10.2   0.0   3.2   3.4  16.1   15:00    SE
15  10.5  12.4   23:00   9.2    5:30   7.8   0.0   5.2   3.4  19.3   13:00    SE
16  12.1  13.1   22:00  11.0    8:00   6.3   0.0   4.4   2.7  19.3    4:00     W
17  11.7  13.3   12:00  10.4   00:00   6.6   0.0   7.4   2.3  24.1   10:00    SE
18  11.1  12.6   00:00   9.6    7:30   7.2   0.0   1.4   2.9  22.5   21:00    SE
19  13.0  13.7   00:00  12.2   15:00   5.3   0.0   7.2   5.5  27.4    7:00    SE
20   9.2  13.8    1:00   6.5   23:00   9.2   0.0   2.6   2.1  32.2    0:30    SE
21   8.1  11.3   14:00   5.1    5:30  10.3   0.0  11.8   1.9  25.7   12:00     W
22  10.5  12.2    3:30   7.6   00:00   7.8   0.0  20.0   3.7  27.4   13:00     W
23   7.6   9.3   00:00   5.2    7:00  10.7   0.0   5.6   2.7  29.0   22:00    SE
24   6.8  10.2    6:00   2.9   19:30  11.5   0.0  20.0   3.4  33.8    6:30     W
25   8.9  12.3   21:00   4.3    0:30   9.4   0.0  15.4   2.9  27.4   23:00    SE
26  12.3  12.9   12:00  11.9   16:30   6.0   0.0   8.2   4.3  27.4   11:30     W
27  11.2  12.4   14:00   9.7    8:00   7.2   0.0  16.6   1.4  20.9   23:30    SE
28  10.0  11.6   22:30   8.9    6:00   8.3   0.0   0.4   6.0  27.4   15:30    SE
29   9.2  11.3    0:30   7.4    7:30   9.2   0.0   2.8   4.0  32.2   20:30    SE
30   9.8  12.1    6:30   6.6   21:30   8.6   0.0  22.6   5.8  40.2    8:00    SE
31   5.4   8.9   14:00   1.9   00:00  12.9   0.0   7.6   2.6  25.7   14:00     W
-------------------------------------------------------------------------------------
     9.5  13.8    20     1.9    31   272.7   0.0 236.0   3.1  40.2    30      SE

Max >=  32.0:  0
Max <=   0.0:  0
Min <=   0.0:  0
Min <= -18.0:  0
Max Rain: 26.19 ON 03/12/15
Days of Rain: 29 (> .2 mm) 24 (> 2 mm) 2 (> 20 mm)
Heat Base:  18.3  Cool Base:  18.3  Method: Integration