Merced County climate

Merced County Weather in May

NOAA 1991-2020 normals for Merced 23 Wsw, 15.4 km from Merced County

Average highs run from 78°F on May 1 to 86°F on May 31, and lows from 43°F to 47°F. Normal precipitation for the month is 0.38 in over about 3 wet days.

May day by day

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

Normal daily high and low temperature at Merced County, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
82°F
Average low
45°F
Precipitation
0.38 in
Record high
109°FMay 25, 1928
Record low
30°FMay 16, 1978
Chance of a freeze
6%
Days of 90°F or more
6.4
Daylight
13 h 44 min to 14 h 32 min
Cloud cover
31%
Humidity
54%
Dew point
45°F
Wind
9.6 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation.

DateNormal highNormal lowRecord highRecord lowChance wet
May 178°F43°F100°F 194734°F 196712%
May 279°F43°F98°F 194738°F 191512%
May 379°F43°F98°F 200435°F 193812%
May 479°F44°F98°F 199038°F 196412%
May 580°F44°F96°F 199037°F 200312%
May 680°F44°F98°F 192836°F 197711%
May 780°F44°F97°F 200138°F 198611%
May 880°F44°F100°F 200138°F 193011%
May 981°F44°F97°F 200140°F 190811%
May 1081°F45°F100°F 199338°F 192211%
May 1181°F45°F100°F 200132°F 190011%
May 1281°F45°F101°F 193436°F 190011%
May 1382°F45°F105°F 197635°F 199511%
May 1482°F45°F103°F 197240°F 190811%
May 1582°F45°F100°F 197235°F 197811%
May 1682°F45°F102°F 192430°F 197810%
May 1783°F46°F103°F 200840°F 197410%
May 1883°F46°F105°F 200936°F 196210%
May 1983°F46°F104°F 200940°F 190610%
May 2083°F46°F100°F 194735°F 200210%
May 2183°F46°F101°F 198837°F 190310%
May 2284°F46°F101°F 190439°F 19969%
May 2384°F46°F103°F 190440°F 19009%
May 2484°F46°F102°F 193635°F 19789%
May 2584°F47°F109°F 192840°F 19169%
May 2685°F47°F103°F 195140°F 19059%
May 2785°F47°F104°F 202040°F 19048%
May 2885°F47°F104°F 198440°F 19008%
May 2985°F47°F103°F 198440°F 19218%
May 3086°F47°F104°F 198441°F 19048%
May 3186°F47°F106°F 200134°F 19677%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Merced County, in percent.02.557.51012.51102030
  • Chance of a wet day

Sunrise and sunset

Times for 2026, local time (PDT).

May 1
sunrise 6:08 AM, sunset 7:52 PM
May 31
sunrise 5:45 AM, sunset 8:17 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00093243 (Merced 23 Wsw), public domain. Records: NOAA GHCN-Daily, station USC00045532, 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.