Delta climate

Delta Weather in June

NOAA 1991-2020 normals for Conowingo Dam, 15.2 km from Delta

Average highs run from 78°F on June 1 to 87°F on June 30, and lows from 60°F to 67°F. Normal precipitation for the month is 4.46 in over about 10 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 Delta, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

June at a glance

Average high
83°F
Average low
64°F
Precipitation
4.46 in
Record high
109°FJun 21, 1988
Record low
41°FJun 1, 1938
Chance of a freeze
0%
Days of 90°F or more
7.5
Daylight
14 h 48 min to 14 h 56 min
Cloud cover
59%
Humidity
75%
Dew point
62°F
Wind
6.7 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 178°F60°F97°F 201141°F 193831%0%
Jun 278°F60°F97°F 201145°F 195331%0%
Jun 379°F60°F96°F 200044°F 202531%0%
Jun 479°F61°F95°F 202343°F 199031%0%
Jun 579°F61°F89°F 197942°F 199031%0%
Jun 680°F61°F92°F 202145°F 197631%0%
Jun 780°F62°F93°F 198843°F 195831%0%
Jun 880°F62°F98°F 200843°F 197731%0%
Jun 981°F62°F98°F 200843°F 198031%0%
Jun 1081°F63°F101°F 200844°F 198831%0%
Jun 1181°F63°F99°F 200843°F 198032%0%
Jun 1282°F63°F100°F 200044°F 197232%0%
Jun 1382°F64°F95°F 195646°F 198032%0%
Jun 1482°F64°F96°F 200545°F 197832%0%
Jun 1583°F64°F103°F 199145°F 197832%0%
Jun 1683°F64°F103°F 199148°F 197832%0%
Jun 1783°F65°F96°F 199449°F 196132%0%
Jun 1884°F65°F95°F 195742°F 198032%0%
Jun 1984°F65°F97°F 200750°F 198032%0%
Jun 2084°F66°F96°F 199148°F 195632%0%
Jun 2185°F66°F109°F 198848°F 196832%0%
Jun 2285°F66°F99°F 198843°F 194031%0%
Jun 2385°F66°F97°F 202448°F 193631%0%
Jun 2486°F66°F98°F 202549°F 194731%0%
Jun 2586°F67°F100°F 199752°F 197931%0%
Jun 2686°F67°F100°F 195249°F 197931%0%
Jun 2786°F67°F98°F 196353°F 194031%0%
Jun 2886°F67°F99°F 201048°F 198131%0%
Jun 2987°F67°F100°F 199148°F 198131%0%
Jun 3087°F67°F99°F 199448°F 198831%0%

Chance of rain

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

June 1
sunrise 5:39 AM, sunset 8:27 PM
June 30
sunrise 5:41 AM, sunset 8:37 PM

Every day of June: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00182060 (Conowingo Dam), public domain. Records: NOAA GHCN-Daily, station USC00182060, 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.