seasonal Averages and Totals for Autumn 2018

*Anomaly figures compare values to 30 year averages*

Anomaly

Date

Temperatures

(º C)

Mean seasonal

11.1

+0.4

Warmest day

24.9

2/9

Coldest day

4.4

22/11

Average maximum

14.8

+0.4

Warmest night

15.4

11/9 17/9

Coldest night

-2.7

31/10

Average minimum

7.4

+0.2

Lowest Grass Minimum

-6.8

31/10

Rainfall

(mm)

Total

134.0

71%

Rain days > 0.2mm

45

Wettest day

15.4

27/11

Wet days>1.0mm

24

Very wet days > 5.0mm

10

Sunshine

(hr)

Total

329.3

107%

Sunniest day

11.0

1/9

Days without sunshine

11

Days with:

Air frosts

5

Snowfall

0

Ground frosts

18

Snow lying

0

Fog

0

Gales

0

Thunder

1

Hail

2

Some brief comments on the climate statistics for Autumn 2018

This has been the coolest autumn since 2012 (9.7C – only 2 autumn seasons have been cooler in the past 10 years (2010 and 2012).

It has been our driest autumn since 2011; only 4 have been drier in the past 30 years (1996, 2003, 2007 and 2011).

It was our sunniest autumn since 2007; only 4 autumns have had more sunshine in the past 21 years (1999, 2003, 2006 and 2007).