Monte Rio climate

Monte Rio Weather in March

NOAA 1991-2020 normals for Graton, 13.2 km from Monte Rio

Average highs run from 64°F on March 1 to 68°F on March 31, and lows from 40°F to 41°F. Normal precipitation for the month is 5.18 in over about 11 wet days.

March day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Monte Rio, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

March at a glance

Average high
66°F
Average low
41°F
Precipitation
5.18 in
Record high
91°FMar 20, 2026
Record low
28°FMar 10, 2009
Chance of a freeze
66%
Daylight
11 h 21 min to 12 h 37 min
Cloud cover
54%
Humidity
83%
Dew point
46°F
Wind
8.5 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
Mar 164°F40°F74°F 201332°F 200340%
Mar 264°F40°F76°F 202031°F 201840%
Mar 365°F40°F85°F 202033°F 200139%
Mar 465°F40°F80°F 202031°F 201839%
Mar 565°F40°F74°F 200530°F 201839%
Mar 665°F40°F76°F 201531°F 202238%
Mar 765°F40°F80°F 202631°F 199938%
Mar 865°F40°F81°F 200431°F 200238%
Mar 965°F40°F83°F 200432°F 201037%
Mar 1065°F41°F88°F 200428°F 200937%
Mar 1165°F41°F82°F 200530°F 200937%
Mar 1265°F41°F81°F 200730°F 202237%
Mar 1366°F41°F80°F 200432°F 200636%
Mar 1466°F41°F82°F 200433°F 201036%
Mar 1566°F41°F88°F 200433°F 200236%
Mar 1666°F41°F89°F 200430°F 202135%
Mar 1766°F41°F89°F 202632°F 202135%
Mar 1866°F41°F88°F 202632°F 201835%
Mar 1966°F41°F90°F 202633°F 201835%
Mar 2066°F41°F91°F 202632°F 202134%
Mar 2166°F41°F88°F 202634°F 200834%
Mar 2267°F41°F88°F 202235°F 200634%
Mar 2367°F41°F80°F 202632°F 200834%
Mar 2467°F41°F83°F 202534°F 200534%
Mar 2567°F41°F85°F 202531°F 202033%
Mar 2667°F41°F83°F 201530°F 202033%
Mar 2767°F41°F85°F 202630°F 202032%
Mar 2867°F41°F82°F 201533°F 199932%
Mar 2967°F41°F87°F 202634°F 199932%
Mar 3068°F41°F85°F 201132°F 199931%
Mar 3168°F41°F84°F 201130°F 200831%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Monte Rio, in percent.0102030401102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (PDT).

March 1
sunrise 6:44 AM, sunset 6:05 PM
March 31
sunrise 6:58 AM, sunset 7:35 PM

Every day of March: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00043578 (Graton), public domain. Records: NOAA GHCN-Daily, station USW00023213, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: 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.