Altona climate

Altona Weather in June

NOAA 1991-2020 normals for Boulder, 15.9 km from Altona

Average highs run from 78°F on June 1 to 87°F on June 30, and lows from 48°F to 55°F. Normal precipitation for the month is 1.95 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 Altona, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

June at a glance

Average high
83°F
Average low
51°F
Precipitation
1.95 in
Record high
106°FJun 27, 1994
Record low
29°FJun 6, 1998
Chance of a freeze
1%
Days of 90°F or more
5.9
Daylight
14 h 51 min to 14 h 59 min
Cloud cover
56%
Humidity
49%
Dew point
33°F
Wind
6.3 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
Jun 178°F48°F95°F 200230°F 191939%
Jun 278°F48°F96°F 202031°F 191939%
Jun 378°F48°F94°F 200133°F 195138%
Jun 479°F48°F94°F 195837°F 191938%
Jun 579°F49°F98°F 194633°F 193738%
Jun 679°F49°F97°F 201829°F 199837%
Jun 780°F49°F100°F 200038°F 198337%
Jun 880°F49°F100°F 200038°F 192437%
Jun 981°F50°F100°F 200038°F 195037%
Jun 1081°F50°F97°F 189637°F 193936%
Jun 1181°F50°F99°F 195234°F 197536%
Jun 1282°F50°F100°F 202233°F 194736%
Jun 1382°F51°F99°F 195231°F 194735%
Jun 1482°F51°F99°F 195634°F 200135%
Jun 1583°F51°F101°F 199440°F 199835%
Jun 1683°F51°F99°F 195232°F 194535%
Jun 1783°F52°F98°F 202135°F 194534%
Jun 1884°F52°F101°F 193636°F 189534%0%
Jun 1984°F52°F99°F 200236°F 193934%0%
Jun 2084°F52°F101°F 198939°F 194634%0%
Jun 2184°F53°F101°F 192241°F 197533%0%
Jun 2285°F53°F100°F 192240°F 195733%0%
Jun 2385°F53°F100°F 192740°F 196433%0%
Jun 2485°F53°F105°F 195440°F 195532%0%
Jun 2586°F54°F101°F 198842°F 196532%0%
Jun 2686°F54°F100°F 197140°F 196532%0%
Jun 2786°F54°F106°F 199442°F 198532%0%
Jun 2886°F54°F104°F 199042°F 199932%0%
Jun 2986°F54°F102°F 191938°F 191832%0%
Jun 3087°F55°F103°F 199042°F 191832%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Altona, 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 (MDT).

June 1
sunrise 5:34 AM, sunset 8:25 PM
June 30
sunrise 5:35 AM, sunset 8:34 PM

Every day of June: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00050848 (Boulder), public domain. Records: NOAA GHCN-Daily, station USC00055116, 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.