McHenry County climate

McHenry County Weather in March

NOAA 1991-2020 normals for Crystal Lake 4NW, 8.4 km from McHenry County

Average highs run from 40°F on March 1 to 54°F on March 31, and lows from 20°F to 32°F. Normal precipitation for the month is 2.51 in over about 8 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 McHenry County, in °F, with the record for each date.-20020406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

March at a glance

Average high
47°F
Average low
26°F
Precipitation
2.51 in
Snowfall
4.4 in
Record high
82°FMar 22, 2012
Record low
-15°FMar 1, 2015
Chance of a freeze
100%
Daylight
11 h 15 min to 12 h 41 min
Cloud cover
66%
Humidity
80%
Dew point
28°F
Wind
12.1 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Mar 140°F20°F61°F 2000-15°F 201527%15%
Mar 240°F21°F63°F 1992-11°F 196227%15%
Mar 341°F21°F62°F 1983-8°F 201427%15%
Mar 441°F21°F71°F 1974-10°F 201427%14%
Mar 542°F22°F66°F 1983-9°F 200227%14%
Mar 642°F22°F67°F 2000-8°F 201527%14%
Mar 743°F23°F68°F 2000-3°F 201527%13%
Mar 843°F23°F77°F 2000-7°F 196027%13%
Mar 943°F23°F73°F 2000-7°F 197527%12%
Mar 1044°F24°F69°F 2026-4°F 197527%12%
Mar 1144°F24°F66°F 19551°F 197928%12%
Mar 1245°F25°F66°F 19732°F 199328%11%
Mar 1345°F25°F68°F 20245°F 199328%11%
Mar 1446°F26°F71°F 1995-4°F 199328%11%
Mar 1546°F26°F76°F 20121°F 199328%10%
Mar 1647°F27°F78°F 20126°F 199728%10%
Mar 1747°F27°F74°F 20127°F 202628%10%
Mar 1848°F27°F78°F 20127°F 195928%9%
Mar 1948°F28°F78°F 20122°F 196529%9%
Mar 2049°F28°F73°F 2012-6°F 196529%9%
Mar 2149°F29°F81°F 20120°F 196529%8%
Mar 2250°F29°F82°F 20129°F 201329%8%
Mar 2350°F30°F80°F 20120°F 197430%8%
Mar 2451°F30°F69°F 1963-2°F 196530%7%
Mar 2551°F30°F76°F 2017-1°F 196030%7%
Mar 2652°F31°F76°F 20070°F 196030%7%
Mar 2752°F31°F78°F 20073°F 196531%6%
Mar 2852°F31°F75°F 19984°F 196531%6%
Mar 2953°F32°F76°F 19868°F 196931%6%
Mar 3053°F32°F82°F 19860°F 195431%6%
Mar 3154°F32°F77°F 20266°F 196932%5%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at McHenry County, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

March 1
sunrise 6:29 AM, sunset 5:44 PM
March 31
sunrise 6:38 AM, sunset 7:19 PM

Every day of March: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00112048 (Crystal Lake 4NW), public domain. Records: NOAA GHCN-Daily, station USC00471205, 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.