Rivera Weather in January

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

Average highs run from 32°C on January 1 to 31°C on January 31, and lows from 18°C to 18°C. Normal precipitation for the month is 136 mm over about 12 wet days.

January day by day

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

Normal low
Normal high
Reanalysis extreme high
Reanalysis extreme low

January at a glance

Average high: 32°C
Average low: 18°C
Precipitation: 136 mm
Reanalysis high: 41°CJan 8, 2006
Reanalysis low: 9°CJan 2, 2013
Daylight: 14 h 07 min to 13 h 34 min
Cloud cover: 53%
Humidity: 67%
Dew point: 17°C
Wind: 13.0 km/h

Every day of the month

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

Date	Normal high	Normal low	Reanalysis high	Reanalysis low	Chance wet
Jan 1	32°C	18°C	39°C 1995	9°C 2004	32%
Jan 2	32°C	18°C	40°C 1995	9°C 2013	33%
Jan 3	32°C	18°C	38°C 1996	11°C 2013	35%
Jan 4	32°C	18°C	37°C 1997	12°C 2009	35%
Jan 5	32°C	18°C	38°C 2005	13°C 1991	35%
Jan 6	32°C	18°C	39°C 2005	14°C 1999	35%
Jan 7	32°C	18°C	41°C 2006	13°C 1998	36%
Jan 8	32°C	18°C	41°C 2006	10°C 1998	36%
Jan 9	32°C	18°C	41°C 2006	12°C 1998	38%
Jan 10	32°C	18°C	40°C 2006	10°C 1994	38%
Jan 11	32°C	18°C	39°C 2012	11°C 1994	38%
Jan 12	32°C	18°C	39°C 1997	10°C 2001	38%
Jan 13	32°C	18°C	38°C 2005	12°C 2010	38%
Jan 14	32°C	18°C	37°C 2005	13°C 2010	38%
Jan 15	32°C	18°C	37°C 2006	11°C 2002	37%
Jan 16	32°C	18°C	37°C 2011	9°C 1992	36%
Jan 17	32°C	18°C	37°C 2009	10°C 1991	37%
Jan 18	31°C	18°C	38°C 2014	11°C 1993	37%
Jan 19	31°C	18°C	39°C 2014	13°C 1998	36%
Jan 20	31°C	18°C	39°C 1991	12°C 2008	35%
Jan 21	31°C	18°C	39°C 1999	11°C 2005	34%
Jan 22	32°C	18°C	38°C 2014	12°C 2008	34%
Jan 23	32°C	18°C	39°C 2005	13°C 2010	35%
Jan 24	32°C	18°C	40°C 1999	11°C 2003	36%
Jan 25	32°C	18°C	36°C 2009	13°C 2003	36%
Jan 26	32°C	18°C	37°C 2009	11°C 2013	36%
Jan 27	32°C	18°C	36°C 1997	12°C 2017	37%
Jan 28	32°C	18°C	36°C 2011	13°C 2017	39%
Jan 29	32°C	18°C	39°C 2004	14°C 1995	39%
Jan 30	32°C	18°C	39°C 2012	12°C 2015	39%
Jan 31	31°C	18°C	39°C 2012	14°C 2015	40%

Chance of rain

Chance of a wet day

Sunrise and sunset

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

January 1: sunrise 5:42 AM, sunset 7:49 PM
January 31: sunrise 6:08 AM, sunset 7:42 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.