Fontana climate

Fontana Weather in January

NASA POWER reanalysis for the half-degree grid cell around Fontana, 1991-2020; a grid cell is an area average and can differ from a thermometer in town by several degrees

Average highs run from 34°C on January 1 to 33°C on January 31, and lows from 23°C to 22°C. Normal precipitation for the month is 167 mm over about 12 wet days.

January day by day

The normal high and low for each date, in °C.

Normal daily high and low temperature at Fontana, in °C, with the record for each date.1020304050151015202530
  • Normal low
  • Normal high
  • Reanalysis extreme high
  • Reanalysis extreme low

January at a glance

Average high
34°C
Average low
22°C
Precipitation
167 mm
Reanalysis high
41°CJan 16, 2006
Reanalysis low
12°CJan 16, 1992
Daylight
13 h 50 min to 13 h 23 min
Cloud cover
56%
Humidity
65%
Dew point
20°C
Wind
13.3 km/h

Every day of the month

A wet day has at least 1 mm of precipitation in the reanalysis.

DateNormal highNormal lowReanalysis highReanalysis lowChance wet
Jan 134°C23°C38°C 199613°C 200439%
Jan 234°C23°C40°C 199613°C 201339%
Jan 334°C23°C38°C 199615°C 201339%
Jan 434°C23°C39°C 199516°C 200938%
Jan 534°C23°C40°C 199517°C 200938%
Jan 634°C23°C40°C 199518°C 200938%
Jan 734°C23°C41°C 200618°C 199838%
Jan 834°C23°C41°C 200017°C 199836%
Jan 934°C23°C40°C 200615°C 199836%
Jan 1034°C22°C41°C 201215°C 199436%
Jan 1134°C22°C41°C 200615°C 200136%
Jan 1234°C22°C39°C 200612°C 200136%
Jan 1334°C22°C38°C 200516°C 200137%
Jan 1434°C22°C39°C 200616°C 201038%
Jan 1534°C22°C41°C 200615°C 199237%
Jan 1634°C22°C41°C 200612°C 199238%
Jan 1734°C22°C38°C 201215°C 199139%
Jan 1834°C22°C39°C 201215°C 199139%
Jan 1933°C22°C39°C 201217°C 201939%
Jan 2034°C22°C40°C 199417°C 200939%
Jan 2133°C22°C40°C 200016°C 200940%
Jan 2233°C22°C39°C 201418°C 201040%
Jan 2333°C22°C39°C 199618°C 201040%
Jan 2433°C22°C39°C 201316°C 200341%
Jan 2533°C22°C41°C 199617°C 200342%
Jan 2633°C22°C40°C 201116°C 200543%
Jan 2733°C23°C39°C 199715°C 201744%
Jan 2833°C23°C38°C 201117°C 201744%
Jan 2933°C23°C39°C 200418°C 199844%
Jan 3033°C23°C40°C 200418°C 201544%
Jan 3133°C22°C41°C 200417°C 201544%

Chance of rain

The chance of at least 1 mm of precipitation in the reanalysis on each date at Fontana, in percent.010203040501102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (GMT-3).

January 1
sunrise 6:05 AM, sunset 7:55 PM
January 31
sunrise 6:28 AM, sunset 7:51 PM

Every day of January: sun and moon

Other months

Sources

Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.