March 2018 Summary

In Brief:
Unusually cold and stormy start with snow.   Then very wet and unsettled with continued low pressure.
Further snow mid-month, then less cold but still very wet.  Very few fine days.

Temperature: [Minimum]:
Lowest:  -4.5 degs C on the 1st.  Lowest minimum in any month since -4.6 on 7th January 2009, which was the lowest temperature recorded at this location [since at least 2003].   Previously in March -2.3 in 2013.
Highest:  9.1 degs C on the 10th.  Every March since at least 2004 has had a milder night.
Average minimum:  3.15 degs C.  Lowest of the last 15 Marches.  Previously 4.13 in 2016.
Nights with temperature below 5 degs C = 20. Most for March since at least 2003.  Previously 19 in 2016.
Nights with temperature below 0 degs C = 5.  Most for March since at least 2003.  Previously 4 in 2005.

Temperature: [Maximum]:
Lowest:  1.0 degs C on the 1st.  *This maximum was only reached in the evening, with daytime temperature peaking at -1.8 degs C, thus making it the coldest 'day' ever at this location [since at least 2003] exceeding negatively the max of -1.3 on the previous day, 28th February.  Previous coldest March day was 3.2 in 2013.
Highest:  14.7 degs C on the 25th.  Every March since 2003 [except 2015 with max 14.4] has had a higher temperature than this. 
Average maximum:  10.2 degs C.  2nd lowest of the last 15 Marches.  Lowest = 9.85 in 2013.
Days with temperature above 20 degs C = 0.
Days with temperature above 25 degs C = 0. 

Rainfall:
Total: 195.1 mm.  Wettest March since at least 2009.
February 2018:  92.0 mm.
March 2017:  108.1 mm.

Wettest day:  23.5 mm on the 9th.   Wettest March day since 2013.
Other days with >20 mm: 21.3 mm [14th].
Wettest spells: 1st to 10th: 82.2 mm;  14th to 17th: 41.1 mm;  22nd to 24th: 40.4 mm.  
Driest spells:  19th to 21st: 1.0 mm [snow].
Completely dry days:  4.  Fewest of the last 10 Marches.
Days with no measurable rain:  6.  Fewest of the last 10 Marches and equal fewest of any month since January 2016.
Cumulatively:  2018 = 504.0 mm.
2017:  286.2 mm.  [+76.1%].

Snow fell/lying on 1st, 2nd, 18th, 19th.

Thunder:
None this month.

Pressure:
Lowest:  980.0 mb on the 11th.  
Highest: 1038.8 mb on the 21st.