Roundup climate

Roundup Weather in July

NOAA 1991-2020 normals for Roundup, 1.1 km from Roundup

Average highs run from 84°F on July 1 to 91°F on July 31, and lows from 51°F to 55°F. Normal precipitation for the month is 1.70 in over about 7 wet days.

July day by day

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

Normal daily high and low temperature at Roundup, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

July at a glance

Average high
89°F
Average low
54°F
Precipitation
1.70 in
Record high
106°FJul 12, 2026
Record low
30°FJul 5, 1994
Chance of a freeze
0%
Days of 90°F or more
17.6
Daylight
15 h 44 min to 14 h 52 min
Cloud cover
45%
Humidity
47%
Dew point
48°F
Wind
8.3 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
Jul 184°F51°F100°F 199035°F 196829%0%
Jul 285°F51°F100°F 193635°F 195528%0%
Jul 385°F51°F103°F 193636°F 197228%0%
Jul 486°F52°F103°F 193733°F 197227%0%
Jul 586°F52°F105°F 193630°F 199427%0%
Jul 686°F52°F102°F 193640°F 194526%0%
Jul 787°F52°F102°F 193637°F 197126%0%
Jul 887°F52°F102°F 198337°F 197126%0%
Jul 987°F53°F98°F 194038°F 201125%0%
Jul 1088°F53°F102°F 197340°F 199925%0%
Jul 1188°F53°F100°F 193935°F 195124%0%
Jul 1288°F53°F106°F 202639°F 196324%0%
Jul 1389°F53°F101°F 195340°F 196524%0%
Jul 1489°F54°F103°F 195331°F 199423%0%
Jul 1589°F54°F100°F 193536°F 199423%0%
Jul 1690°F54°F102°F 196633°F 199423%0%
Jul 1790°F54°F103°F 193638°F 191422%0%
Jul 1890°F54°F106°F 193642°F 191422%0%
Jul 1990°F54°F103°F 196037°F 197222%0%
Jul 2091°F55°F102°F 193441°F 199422%0%
Jul 2191°F55°F102°F 193636°F 199421%0%
Jul 2291°F55°F104°F 198537°F 195421%0%
Jul 2391°F55°F100°F 194040°F 195021%0%
Jul 2491°F55°F102°F 193641°F 195221%0%
Jul 2591°F55°F101°F 198842°F 195820%0%
Jul 2691°F55°F101°F 198838°F 197120%0%
Jul 2791°F55°F100°F 193540°F 201220%0%
Jul 2891°F55°F104°F 193539°F 197620%0%
Jul 2991°F55°F98°F 193436°F 197120%0%
Jul 3091°F55°F100°F 193639°F 197119%0%
Jul 3191°F55°F100°F 193640°F 196819%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Roundup, in percent, and of at least 0.1 inch of snowfall.01020301102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

July 1
sunrise 5:26 AM, sunset 9:10 PM
July 31
sunrise 5:54 AM, sunset 8:46 PM

Every day of July: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00247214 (Roundup), public domain. Records: NOAA GHCN-Daily, station USC00243727, 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.