Summit climate

Summit Weather in May

NOAA 1991-2020 normals for Lead Hill, 27.4 km from Summit

Average highs run from 71°F on May 1 to 79°F on May 31, and lows from 49°F to 59°F. Normal precipitation for the month is 5.11 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 Summit, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
75°F
Average low
54°F
Precipitation
5.11 in
Record high
96°FMay 26, 2012
Record low
34°FMay 3, 2005
Chance of a freeze
10%
Days of 90°F or more
0.9
Daylight
13 h 41 min to 14 h 27 min
Cloud cover
61%
Humidity
80%
Dew point
59°F
Wind
4.3 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 171°F49°F87°F 200235°F 200536%0%
May 271°F49°F87°F 202037°F 200536%0%
May 372°F49°F84°F 201434°F 200536%0%
May 472°F50°F93°F 201434°F 201336%0%
May 572°F50°F90°F 201434°F 201336%0%
May 672°F50°F88°F 200742°F 201636%0%
May 772°F51°F86°F 200940°F 202636%0%
May 873°F51°F89°F 202345°F 202036%0%
May 973°F51°F88°F 199937°F 202036%0%
May 1073°F52°F90°F 202243°F 200036%0%
May 1173°F52°F91°F 200539°F 202036%0%
May 1274°F52°F91°F 202240°F 200836%0%
May 1374°F53°F89°F 202241°F 202136%0%
May 1474°F53°F91°F 201339°F 200036%0%
May 1575°F53°F87°F 199940°F 201436%0%
May 1675°F54°F89°F 200137°F 201436%0%
May 1775°F54°F88°F 200141°F 201136%0%
May 1875°F54°F88°F 201240°F 200236%0%
May 1976°F55°F90°F 200641°F 200236%0%
May 2076°F55°F89°F 200645°F 200235%0%
May 2176°F55°F86°F 200445°F 200235%0%
May 2277°F56°F89°F 199944°F 200135%0%
May 2377°F56°F94°F 200047°F 200135%0%
May 2477°F56°F90°F 200045°F 200135%0%
May 2577°F57°F91°F 200643°F 200135%0%
May 2678°F57°F96°F 201248°F 200334%0%
May 2778°F57°F94°F 201250°F 200334%0%
May 2878°F58°F95°F 201249°F 200534%0%
May 2979°F58°F92°F 201250°F 202134%0%
May 3079°F58°F89°F 200046°F 202134%0%
May 3179°F59°F89°F 201850°F 202134%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Summit, 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).

May 1
sunrise 6:18 AM, sunset 7:59 PM
May 31
sunrise 5:55 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 USC00034106 (Lead Hill), public domain. Records: NOAA GHCN-Daily, station USW00053918, 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.