June 2017 weather data

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

June 2017 had two very wet spells which sandwiched a period of 17 consecutive days without significant rain (the dictionary definition of a drought is for 15 such days) and during which temperatures were unseasonably high.

The Penallt total rainfall of 110.0 mm was just under twice the Usk* June average of 60.2 mm with the 5th being the wettest day with 28.2 mm of rain. There were 19 days in the month when no measurable rain fell too.

Maximum temperatures were overall above average during this period, exceeding 20°C on thirteen days with a maximum of 30.8°C on both the 19th and the 21st. This temperature equals the second highest in Penallt since records began six years ago, the highest being 31.2°C on July 19th 2016.

The month had two markedly cool spells, the last few days being noticeably cold. Overall, the average maximum temperature of 20.5°C was 0.2°C above the Usk* average for June of 20.3°C.

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

Day by day data for June are given below:-

                   MONTHLY CLIMATOLOGICAL SUMMARY for JUN. 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  16.9  21.8   17:00  12.5    5:30   2.2   0.8   0.0   1.1  16.1   15:30     W
 2  15.5  18.8   14:30  11.7    6:00   2.8   0.0   1.4   0.3   8.0   13:30     W
 3  13.5  18.2   16:00   8.3   00:00   4.8   0.0   0.0   0.6  14.5   16:30     W
 4  11.9  17.1   17:30   7.7    4:30   6.4   0.0   2.4   1.3  16.1   11:00     W
 5  11.7  13.8   14:00   9.3    2:00   6.7   0.0  28.2   3.5  27.4   18:30   ESE
 6  11.4  15.7   16:30   8.8    5:00   6.9   0.0  10.6   1.9  20.9   11:30     W
 7  12.9  17.6   11:00   9.2    4:30   5.4   0.0   1.0   1.4  20.9   14:00     W
 8  13.1  15.4   15:00  11.7   00:00   5.2   0.0  11.8   3.1  20.9    9:00     W
 9  13.7  17.9   17:00   9.9    5:30   4.7   0.0   5.8   1.8  17.7   11:30     W
10  14.9  17.6   16:30  12.1    2:30   3.4   0.0   9.4   2.7  19.3    7:00   ESE
11  14.1  17.8   16:00  12.0   00:00   4.2   0.0   0.0   2.7  19.3   14:00     W
12  13.7  17.7   15:00  10.4   00:00   4.7   0.0   0.0   0.8  16.1    9:30     W
13  15.2  21.4   15:30  10.0    1:00   3.6   0.5   0.0   0.2   8.0   12:30     W
14  18.1  24.2   16:00  11.4    3:30   2.1   1.7   0.0   1.1  16.1   15:30   ENE
15  15.5  20.7   14:30  11.9   00:00   3.1   0.2   0.0   1.3  20.9   10:00     W
16  16.8  22.1   18:00  10.6    4:00   2.5   1.0   0.0   0.5  12.9   11:00     W
17  20.7  28.3   17:00  11.8    5:30   1.5   3.9   0.0   0.2   8.0   14:30     W
18  22.6  29.3   16:30  14.4    5:30   0.7   4.9   0.0   0.5  11.3   15:00   ENE
19  23.8  30.8   16:30  16.7    5:30   0.2   5.7   0.0   0.3   9.7   13:00   ENE
20  23.0  29.6   14:30  17.3    6:00   0.1   4.8   0.0   0.3   9.7   12:00     E
21  23.0  30.8   17:00  15.9    5:30   0.4   5.1   0.0   0.5   8.0    8:30     E
22  17.4  21.4   14:30  12.6   00:00   1.5   0.6   0.0   1.1  16.1    3:30     W
23  14.8  17.0   12:30  11.9    1:30   3.5   0.0   0.2   2.1  19.3   17:30     W
24  17.1  21.8   15:00  13.3   00:00   1.9   0.6   0.0   1.4  17.7    0:30     W
25  15.8  19.9   13:30  12.9   00:00   2.7   0.1   0.0   1.0  17.7   13:30     W
26  16.1  21.3   15:00   9.4    5:30   2.8   0.6   0.0   0.5   9.7   13:30   ENE
27  16.7  19.8   14:00  13.8    7:30   1.8   0.1   0.0   0.5   9.7    6:00   ENE
28  13.4  15.9    0:30  11.0   00:00   4.9   0.0  22.4   0.0   9.7   12:00     E
29  11.8  14.7   16:30   9.6    5:00   6.5   0.0  16.4   0.0   4.8   13:00   ESE
30  14.1  17.8   11:30  10.8    5:30   4.3   0.0   0.4   0.0   8.0   15:30   ESE
-------------------------------------------------------------------------------------
    16.0  30.8    19     7.7     4   101.4  30.6 110.0   1.1  27.4     5       W

Max >=  32.0:  0
Max <=   0.0:  0
Min <=   0.0:  0
Min <= -18.0:  0
Max Rain: 28.19 ON 05/06/17
Days of Rain: 12 (> .2 mm) 8 (> 2 mm) 2 (> 20 mm)
Heat Base:  18.3  Cool Base:  18.3  Method: Integration