Grafton climate

Grafton Weather in June

NOAA 1991-2020 normals for St Charles CO AP, 4.6 km from Grafton

Average highs run from 82°F on June 1 to 89°F on June 30, and lows from 61°F to 68°F. Normal precipitation for the month is 4.55 in over about 11 wet days.

June day by day

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

Normal daily high and low temperature at Grafton, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

June at a glance

Average high
86°F
Average low
65°F
Precipitation
4.55 in
Record high
105°FJun 28, 2012
Record low
48°FJun 1, 2003
Chance of a freeze
0%
Days of 90°F or more
9.6
Daylight
14 h 44 min to 14 h 52 min
Cloud cover
56%
Humidity
77%
Dew point
65°F
Wind
6.9 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
Jun 182°F61°F96°F 201848°F 200341%0%
Jun 282°F62°F94°F 202349°F 200340%0%
Jun 383°F62°F96°F 201149°F 200140%0%
Jun 483°F62°F99°F 201152°F 200940%0%
Jun 583°F63°F93°F 199950°F 200340%0%
Jun 684°F63°F97°F 201149°F 199840%0%
Jun 784°F63°F97°F 201149°F 200040%0%
Jun 884°F63°F97°F 201153°F 201239%0%
Jun 985°F64°F93°F 201151°F 200739%0%
Jun 1085°F64°F96°F 201857°F 200739%0%
Jun 1185°F64°F96°F 201858°F 202539%0%
Jun 1285°F64°F97°F 201355°F 202339%0%
Jun 1386°F65°F100°F 202252°F 202338%0%
Jun 1486°F65°F98°F 202253°F 201438%0%
Jun 1586°F65°F99°F 201656°F 199938%0%
Jun 1686°F65°F97°F 201653°F 199938%0%
Jun 1787°F66°F98°F 201850°F 199937%0%
Jun 1887°F66°F101°F 202152°F 199937%0%
Jun 1987°F66°F96°F 201856°F 200537%0%
Jun 2087°F66°F96°F 202253°F 200337%0%
Jun 2187°F66°F98°F 202254°F 200336%0%
Jun 2288°F67°F97°F 201653°F 202136%0%
Jun 2388°F67°F97°F 201653°F 200436%0%
Jun 2488°F67°F97°F 202457°F 200135%0%
Jun 2588°F67°F101°F 202456°F 200435%0%
Jun 2688°F67°F96°F 199850°F 200435%0%
Jun 2788°F67°F97°F 200953°F 201734%0%
Jun 2888°F67°F105°F 201257°F 200634%0%
Jun 2989°F67°F102°F 201252°F 200434%0%
Jun 3089°F68°F101°F 201258°F 200433%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Grafton, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

June 1
sunrise 5:38 AM, sunset 8:22 PM
June 30
sunrise 5:39 AM, sunset 8:31 PM

Every day of June: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00053904 (St Charles CO AP), public domain. Records: NOAA GHCN-Daily, station USW00053904, 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.