Alton climate

Alton Weather in June

NOAA 1991-2020 normals for La Joya, 4.2 km from Alton

Average highs run from 93°F on June 1 to 95°F on June 30, and lows from 73°F to 75°F. Normal precipitation for the month is 1.95 in over about 3 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 Alton, in °F, with the record for each date.406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

June at a glance

Average high
95°F
Average low
74°F
Precipitation
1.95 in
Record high
111°FJun 22, 2017
Record low
59°FJun 3, 1970
Chance of a freeze
0%
Days of 90°F or more
28.4
Daylight
13 h 41 min to 13 h 46 min
Cloud cover
42%
Humidity
62%
Dew point
69°F
Wind
12.5 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 193°F73°F101°F 201861°F 198410%0%
Jun 294°F73°F103°F 201863°F 196410%0%
Jun 394°F74°F102°F 201859°F 197010%0%
Jun 494°F74°F102°F 201866°F 197010%0%
Jun 594°F74°F106°F 201768°F 196710%0%
Jun 694°F74°F103°F 200166°F 196910%0%
Jun 794°F74°F106°F 201966°F 197810%0%
Jun 894°F74°F105°F 201969°F 197011%0%
Jun 995°F74°F104°F 201968°F 197311%0%
Jun 1095°F74°F103°F 200168°F 197511%0%
Jun 1195°F74°F104°F 202468°F 199511%0%
Jun 1295°F74°F103°F 200164°F 197911%0%
Jun 1395°F74°F104°F 202461°F 197911%0%
Jun 1495°F74°F109°F 199862°F 197911%0%
Jun 1595°F74°F110°F 199867°F 197911%0%
Jun 1695°F74°F105°F 201765°F 197911%0%
Jun 1795°F74°F105°F 201765°F 198911%0%
Jun 1895°F74°F105°F 202371°F 197212%0%
Jun 1995°F75°F107°F 202368°F 198512%0%
Jun 2095°F75°F106°F 202369°F 196112%0%
Jun 2195°F75°F108°F 202369°F 196112%0%
Jun 2295°F75°F111°F 201769°F 196112%0%
Jun 2395°F75°F104°F 201770°F 196112%0%
Jun 2495°F75°F103°F 201770°F 197412%0%
Jun 2595°F75°F103°F 201268°F 197413%0%
Jun 2695°F75°F105°F 198062°F 197413%0%
Jun 2795°F75°F107°F 198065°F 197413%0%
Jun 2895°F75°F104°F 198066°F 197413%0%
Jun 2995°F75°F104°F 201366°F 197413%0%
Jun 3095°F75°F104°F 199267°F 198513%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Alton, in percent, and of at least 0.1 inch of snowfall.0510151102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

June 1
sunrise 6:41 AM, sunset 8:22 PM
June 30
sunrise 6:44 AM, sunset 8:30 PM

Every day of June: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00414911 (La Joya), public domain. Records: NOAA GHCN-Daily, station USW00012959, 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.