Lancaster climate

Lancaster Weather in May

NOAA 1991-2020 normals for Warsaw 2 Nw, 36.5 km from Lancaster

Average highs run from 74°F on May 1 to 80°F on May 31, and lows from 51°F to 59°F. Normal precipitation for the month is 3.90 in over about 11 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 Lancaster, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
77°F
Average low
55°F
Precipitation
3.90 in
Record high
94°FMay 18, 2026
Record low
34°FMay 13, 2017
Chance of a freeze
4%
Days of 90°F or more
2.8
Daylight
13 h 46 min to 14 h 36 min
Cloud cover
60%
Humidity
79%
Dew point
57°F
Wind
9.2 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
May 174°F51°F84°F 200740°F 201837%0%
May 275°F51°F86°F 201040°F 201537%0%
May 375°F52°F86°F 200744°F 200537%0%
May 475°F52°F87°F 202143°F 200437%0%
May 575°F52°F87°F 202140°F 200337%0%
May 675°F53°F85°F 202143°F 200537%0%
May 775°F53°F87°F 201042°F 202137%0%
May 876°F53°F87°F 200442°F 201737%0%
May 976°F53°F87°F 202442°F 202137%0%
May 1076°F54°F87°F 200944°F 202137%0%
May 1176°F54°F85°F 200441°F 201037%0%
May 1276°F54°F84°F 200344°F 201037%0%
May 1377°F55°F89°F 201834°F 201737%0%
May 1477°F55°F88°F 201445°F 202136%0%
May 1577°F55°F84°F 201045°F 202136%0%
May 1677°F55°F87°F 202540°F 201636%0%
May 1777°F56°F88°F 202649°F 201636%0%
May 1877°F56°F94°F 202648°F 201436%0%
May 1978°F56°F92°F 202645°F 200936%0%
May 2078°F56°F93°F 202640°F 200936%0%
May 2178°F57°F93°F 202644°F 200936%0%
May 2278°F57°F86°F 200439°F 200236%0%
May 2378°F57°F88°F 202141°F 200236%0%
May 2479°F58°F88°F 200448°F 200636%0%
May 2579°F58°F88°F 201150°F 200636%0%
May 2679°F58°F92°F 202149°F 202336%0%
May 2779°F58°F92°F 202152°F 202536%0%
May 2880°F59°F89°F 201055°F 200336%0%
May 2980°F59°F90°F 201946°F 200836%0%
May 3080°F59°F91°F 201949°F 200836%0%
May 3180°F59°F92°F 201150°F 202136%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Lancaster, 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 (EDT).

May 1
sunrise 6:10 AM, sunset 7:56 PM
May 31
sunrise 5:46 AM, sunset 8:22 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00448894 (Warsaw 2 Nw), public domain. Records: NOAA GHCN-Daily, station USC00446161, 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.