January 2017 weather data

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(Jan 2018: updated to compare with Usk and not Ross-on-Wye)

January 2017 was a little below normal as far as temperature and rainfall were concerned and the average maximum temperature of 7.0°C was 1.1°C below the Usk average for January of 8.1°C. The minimum temperature sank below 0°C on thirteen days. The warmest day was the 11th (max = 10.5°C) and the coldest was the 21st with a low of -3.8°C.

The measured rainfall was 89.4 mm, 70% of the Usk* average for January of 127.6 mm, with 49 mm falling in the last five days of the month. Rain was measured on 18 days in the month, the wettest being the last day when 17.4 mm fell. There was an eight day period in which no significant rain fell (>0.2 mm per day) between the 19th and the 26th.

* Usk is the nearest Met Office station for which long term averages (1981-2010) are available.

Day by day data for January are given below:-

                   
                   MONTHLY CLIMATOLOGICAL SUMMARY for JAN. 2017

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   3.9   7.2    8:00   0.2   23:30  14.4   0.0  12.2   1.1  16.1   16:30   ENE
 2   0.7   3.6   13:30  -0.4   18:00  17.6   0.0   0.4   0.5   9.7    3:30   ENE
 3   2.0   6.1   13:00  -0.5    7:00  16.3   0.0   0.4   0.0   6.4   13:00     W
 4   4.4   9.4   13:00  -0.8   00:00  13.9   0.0   0.0   0.0   8.0   13:00     E
 5  -0.2   3.8   11:30  -2.9    8:00  18.6   0.0   0.2   0.2   8.0   13:30    SE
 6   4.5   8.3   00:00   0.2    2:00  13.8   0.0   6.8   1.0  14.5   14:00    SE
 7   8.8  10.1   14:00   7.5   20:30   9.6   0.0   1.0   0.0   6.4    0:30     W
 8   8.1   9.3   12:00   5.8   20:00  10.3   0.0   0.8   0.0   3.2   20:30     W
 9   6.6   8.5    3:30   4.0   21:30  11.8   0.0   3.4   1.4  20.9    6:30     W
10   6.4   8.0   20:00   4.6    1:00  11.9   0.0   0.2   0.0  14.5    4:00     W
11   7.5  10.5   12:00   4.7   21:30  10.8   0.0   0.0   1.3  17.7   12:00     W
12   2.8   5.3    3:00  -0.4   23:00  15.5   0.0   6.8   0.2  16.1    5:00     W
13   1.7   5.4   12:30  -0.4    7:00  16.6   0.0   0.6   0.8  19.3   16:00     W
14   3.6   7.8   11:30  -0.6    1:30  14.8   0.0   0.2   0.0   9.7    6:30     W
15   7.3   9.7   14:30   4.8    4:00  11.0   0.0   1.6   0.2  12.9   14:00     W
16   8.4   9.5   12:00   7.1   22:00   9.9   0.0   1.6   0.0   6.4   11:00   ENE
17   4.5   7.1    0:30   4.1   22:00  13.8   0.0   2.2   0.2   8.0   12:00    SE
18   3.8   4.7   14:30   3.2    9:00  14.5   0.0   0.8   0.0   4.8    2:00    SE
19   3.4   5.2   12:30   1.4   23:30  14.9   0.0   0.2   0.0   4.8   16:30   ENE
20   0.6   3.9   15:00  -2.2    8:00  17.8   0.0   0.2   0.0   8.0   14:30   ENE
21  -1.0   2.8   12:30  -3.8    8:00  19.3   0.0   0.2   0.0   6.4   21:30   ENE
22   1.8   4.8   16:00  -1.7    2:30  16.6   0.0   0.2   0.2  11.3   10:00    SE
23   3.4   9.1   13:30   0.6   19:30  14.9   0.0   0.0   0.0   6.4   14:30   ESE
24   3.6   8.5   13:30  -0.8    8:00  14.8   0.0   0.2   0.0   9.7   15:30   SSW
25   3.9   7.4   13:30   1.2   00:00  14.4   0.0   0.2   1.6  16.1   16:00    SE
26  -0.2   1.2    0:30  -2.0   00:00  18.6   0.0   0.0   4.5  22.5   10:00   ENE
27   2.6   5.6   00:00  -2.0    0:30  15.8   0.0   9.4   2.6  19.3   10:00   SSE
28   5.0   7.9   13:30   3.1   23:30  13.3   0.0  10.2   0.8  17.7    1:00     W
29   5.1   7.3   17:30   1.4    4:30  13.3   0.0   9.0   0.5  22.5   17:30    SE
30   6.5   7.6   23:30   6.0    7:30  11.8   0.0   3.0   1.3  19.3   22:00   ENE
31   9.0  10.4   14:30   7.3    3:00   9.3   0.0  17.4   2.9  19.3    3:00    SE
-------------------------------------------------------------------------------------
     4.1  10.5    11    -3.8    21   439.9   0.0  89.4   0.7  22.5    26      SE

Max >=  32.0:  0
Max <=   0.0:  0
Min <=   0.0: 13
Min <= -18.0:  0
Max Rain: 17.40 ON 31/01/17
Days of Rain: 27 (> .2 mm) 10 (> 2 mm) 0 (> 20 mm)
Heat Base:  18.3  Cool Base:  18.3  Method: Integration