January 2011 cool then hot

The daily weather logWeather log January 2011.

In the first part of January cool wet weather continued. On the 5th the temperature reached only 24.4°, and the 11th had 23.4 mm of rain. Suddenly the rain stopped and temperatures became normal. The last week was dry and hot, with the maximum of 42.0° on the 26th making it the second hottest day this century. By month’s end there had been eighteen days without 5 mm of rain.

 Comparing January monthsClimate January 2011.

This month broke the year-long tendency to a cooler, moister climate in Manilla. Mean maximum, mean, and minimum temperatures and mean soil temperature were all near average. The mean Dew Point remained a little high, and cloudiness was a January record 48%.
The rainfall of 53.8 mm is in the 35th percentile for January, far below the long-term average of 87 mm. However, moisture in the landscape must be close to normal. Rainfall totals for groups of months (up to 360 months) now include no extremes, either above the 90th percentile or below the 25th percentile.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.


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