St Albans district continues to enjoy above-average temperatures, with April reaching a peak of 23.9C.
Levels of sunshine were above average for the time of year, and temperatures were 1.2C above average.
There were 197 hours of sunshine, 36 more than normal.
Sunbathers basked in 12 hours of sunshine on Wednesday, April 12.
Rothamsted Research, based in Harpenden, also said there was only one day in the whole month with no sunshine.
Levels of rainfall were almost 50mm below average, with just 10.9mm for the whole of April.
There were 14 days with 0.2mm of rain, and absolutely zero days with more than 5mm.
The wettest day was over the Bank Holiday weekend, Sunday, April 30, with 4.7mm.
The warmest day was Sunday, April 9, where temperatures reached 23.9C.
The coldest night was Thursday, April 27.
And despite the above-average temperatures, there were 17 ground frosts and two air frosts.
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