Cool and dry
New record low for humidity/dewpoint.
About 16 Ground Frosts


Averages\Extremes for the month of April 2015

---------------------------------------------------------------------------------------------
Average temperature = 7.4°C; diff from climate av: -0.3°C
Average humidity = 80%
Average dewpoint = 4.0°C
Average barometer = 1020.1 mb
Average windspeed = 7.4 mph
Average gustspeed = 10.2 mph
Average direction = 264° ( W )
Rainfall for month = 21.6 mm (-23.5mm)
Rainfall for year = 125.4 mm  (-106mm)
Maximum rain per minute = 0.6 mm on day 27 at time 21:37
Maximum temperature = 18.7°C on day 23 at time 16:09
Minimum temperature = -1.1°C on day 18 at time 02:45
Maximum humidity = 97% on day 18 at time 08:40
Minimum humidity = 18% on day 27 at time 13:19
Maximum dewpoint = 11.8°C on day 23 at time 14:45
Minimum dewpoint = -14.4°C on day 27 at time 12:37
Maximum pressure = 1036.7 mb on day 21 at time 11:42
Minimum pressure = 998.6 mb on day 25 at time 07:36
Maximum windspeed = 29.9 mph from 270°( W ) on day 12 at time 14:26
Maximum gust speed = 38.0 mph from 270°( W ) on day 12 at time 14:27
Maximum heat index = 18.7°C on day 23 at time 16:09
Avg daily max temp :12.4°C
Avg daily min temp :2.6°C
Growing degrees days :36.1 GDD
Total windrun = 4651.3miles
Frost days= 3
-----------------------------------
Daily rain totals
-----------------------------------
01.4 mm on day 1
03.2 mm on day 3
00.4 mm on day 4
00.8 mm on day 11
06.2 mm on day 12
01.2 mm on day 19
02.8 mm on day 25
02.0 mm on day 27
02.8 mm on day 29
00.8 mm on day 30

---

Average high 14.5C
Average low 3.2C
Rainfall 8.4mm
Rain days 4
Sunshine (taken from Leeming) 221.1 hours

---

MONTHLY SUMMARY REPORT FOR KILMERSDON FOR  APRIL 2015 

LOWEST MINIMUM TEMPERATURE -2.7C (27F) 27TH (06:08)
HIGHEST MINIMUM TEMPERATURE 8.9C (48F) 25TH (23:57)
LOWEST MAXIMUM TEMPERATURE 9.9C (50F) 1ST (16:41)
HIGHEST MAXIMUM TEMPERATURE 20.8C (69F) 14TH (16:04) & 15TH (15:42)
LOWEST AVERAGE TEMPERATURE 5.0C (41F) 27TH 
HIGHEST AVERAGE TEMPERATURE 12.1C (54F) 16TH
AVERAGE MINIMUM TEMPERATURE 3.5C (38F)
AVERAGE MAXIMUM TEMPERATURE 15.6C (60F)
AVERAGE TEMPERATURE 9.2C (48F)
ABSOLUTE RANGE 23.5C
LOWEST DAILY TEMPERATURE RANGE 3.6C  3RD
HIGHEST DAILY TEMPERATURE RANGE 19.9C 20TH
AVERAGE TEMPERATURE RANGE 12.0C
YEARLY TEMPERATURE DEPARTURE FROM AVERAGE  -0.2C BELOW 10 YR AVERAGE
HIGHEST PRECIPITATION TOTAL IN 24 HOURS 4.6mm (0.18inc) 3RD
DAYS OF NO MEASURABLE PRECIPITATION 20 DAYS
MAX. CONSECUTIVE DAYS OF NO MEASURABLE PRECIPITATION 12 DAYS 12TH-23RD
TOTAL  PRECIPITATION 14.6mm (0.58inc)
WET DAYS 10 DAYS
MAXIMUM RAIN INTENSITY 8.2mm/hr (0.33inc/hr) 3RD (18:00)
AVERAGE PRECIPITATION (ALL DAYS) 0.48mm/dy (0.02inc/dy)
AVERAGE PRECIPITATION (WET DAYS) 1.46mm/dy (0.06inc/dy)
AVERAGE HUMIDITY 78.0%
HIGHEST HUMIDITY 97% 7TH (08:16)
LOWEST HUMIDITY 41% 11TH (15:39)
ABSOLUTE HUMIDITY RANGE 56%
AVERAGE BAROMETRIC PRESSURE 1021.6 MBS
HIGHEST BAROMETER READING 1038.1 MBS 7TH (10:03)
LOWEST BAROMETER READING 1004.3 MBS 25TH (15:22)
ABSOLUTE BAROMETETRIC RANGE 33.8 MBS
MAXIMUM WIND GUST 27 MPH 1ST (16:05)
AVERAGE WINDSPEED 3 MPH
WIND DIRECTION (SOUTH-WEST) 27.0%
WIND DIRECTION (WEST-NORTH) 30.0%
WIND DIRECTION (NORTH-EAST) 13.0%
WIND DIRECTION (EAST-SOUTH) 30.0%
TOTAL TIME OF AIR FROSTS 16 HRS & 06 MINS
NUMBER OF DAYS WITH SNOW FALLING NONE
NUMBER OF DAYS WITH SNOW LYING NONE
NUMBER OF DAYS WITH THUNDER HEARD NONE
NUMBER OF DAYS WITH LIGHTNING SEEN NONE
NUMBER OF DAYS WITH HAILSTONES UP TO 5MM DIAMETER NONE
NUMBER OF DAYS WITH HAILSTONES MORE THAN 5MM DIAMETER NONE
HIGHEST EVAPOTRANSPIRATION DAY 4.37mm (0.17inc) 22ND
LOWEST EVAPOTRANSPIRATION DAY 0.71mm (0.03inc)
TOTAL  EVAPOTRANSPIRATION 80.63 mm (3.22inc)
TOTAL SUNSHINE HOURS 203 HRS & 36 MINS 
HIGHEST SUNSHINE DAILY TOTAL 13 HRS & 24 MINS 21ST
AVERAGE DAILY SUNSHINE TOTAL 6 HRS & 47 MINS/DY
DAYS OF NO SUN AT ALL 2 DAYS 2ND & 3RD
HIGHEST SOLAR RADIATION (BRIGHTEST DAY) 275.4 W/SQM 22ND
LOWEST SOLAR RADIATION (DULLEST DAY) 49.7 W/SQM  3RD
HIGHEST UV RECORDED 4.4 INX 25TH
ADVECTION FOG DAYS NONE
RADIATION FOG DAYS NONE
FREEZING FOG DAYS NONE
ICE DAYS NONE

 

REPORT
The most notable thing about April weather over Kilmersdon was the above average amount of sunshine through the month. We totaled an amazing 203 hours and a bit which equates to an average of just short of 7 hours a day which for a Spring month is pretty impressive. Only April in 2007 and 2011 came close to this figure making it the sunniest April of the millennium across the area. Of course as always there were cloudier days and the 2nd and 3rd saw no sun at all. However, there was a down side to all that sunshine and we paid for it in terms of night frosts which occurred frequently through the month as skies were often clear at night too. My lowest temperature of the month occurred just after 6am on the morning of the 27th when a minimum of -2.7C (27F) occurred here in the valley (potentially damaging for gardeners and growers who left tender plants outside being as it occurred so late in the month). Conversely strong Spring sunshine on many days compensated this with some very respectable afternoon temperatures and the warm settled spell from the middle of the month saw 20.8C reached on two consecutive days namely the 14th & 15th. Again keen gardeners will know that soil moisture deficits were quite high through April as rainfall was scarce and light when it did occur. Just a shade under 15mm fell through April which is just over half an inch and well below average for April. Coupled with low rainfall totals were some fresh drying winds on many days which enhanced the drying process of the soil. Temperatures for April on average were only a shade below the long term mean but this was offset by warmer than average days against some particularly cold nights especially down here in the valley. There were no particularly strong winds through the month with 27mph the highest gust I recorded on the afternoon of the 1st. There were no incidences of hail, sleet, snow, thunder or lightning through the month as the weather was too settled for such events for much of the month. So overall April 2015 was a very decent mid Spring month with plenty of dry and settled weather with more than average sunshine and rainfall less than average but with a higher than average incidence of night frosts.

---

Half average rainfall in my home area in Highland Perthshire and some warm 20C+ days but most noticeable feature was night frosts. 15 air frosts with lowest min of under -6C and a further 8 ground frosts. Two of those had air temps of 0.0C and one 0.7C.
Theme continuing into May with min of -3C last night and grass temp of -7C.

Summary for April 2015

Temperature (°C):
Mean (1 minute)  10.6
Mean (min+max)   10.8
Mean Minimum     5.3
Mean Maximum     16.3
Minimum          1.1 day 27
Maximum          23.7 day 15
Highest Minimum  8.2 day 25
Lowest Maximum   10.4 day 04
Air frosts       0

Rainfall (mm):
Total for month  15.0
Wettest day      4.8 day 03
High rain rate   3.6 day 02
Rain days        9
Dry days         21

Wind (km/h):
Highest Gust     38 day 18
Average Speed    5
Wind Run         2749.4 km
Gale days        0

Pressure (hPa):
Maximum          1036.0 day 07
Minimum          1002.6 day 25

Days with snow falling         0
Days with snow lying at 0900   0

 

---

Cooler and drier than average here. Some fairly warm days after mid-month but nights consistently cool. Mediocre overall

Max: 19.1c

Min: -0.5c

Rainfall: 63.8 mm

Mean wind speed: 5.1 knots.

High Gust: 38 knots.

Mean Direction: SW

---