Also, given that official weather records have only been kept for about 150 years in the US, as there are more than twice that many days in a year it's unusual if at least one day each year *doesn't* set a record for highest or lowest temperature, or most rainfall or snowfall, for that date, even if there's no climate change. If each of the years were statistically independent with no el Nino climate correlation or climate forcing wouldn't the expected number of record setting events be equal to the sum of the number of terms of the harmonic series? For 150 years that would be about 5.6 and as time goes on records would be set less often.