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Tmin: any Tmax: any
Sunshine: any Rain: any
USA January
Search list: 225 Stations -  Sorting: A - Z

City Tmin Tmax Sunshine Rain
  [°C] [°C] [hrs] [days]
-1 7 n/a 15
-7 0 3 27
-15 -5 n/a 18
-11 -2 n/a 17
0 10 n/a 15
-2 12 n/a 5
-5 -1 n/a 27
1 7 n/a 25
-5 2 4 17
0 14 n/a 7


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USA - Rochester


Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax205718682065199120491998
Tmin206718652069199920531993
Duration of sunshine1241149390155180
Precipitation155141156151155150
Humidity/Visibility153138152147150145


ParameterJulAugSepOctNovDec
Tmax206420651998209520322098
Tmin206420601995208920372100
Duration of sunshine155155150155120124
Precipitation156157152184180186
Humidity/Visibility148148142176175183


Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured.