Caldwell Weather in August
Average highs run from 95°F on August 1 to 87°F on August 31, and lows from 59°F to 51°F. Normal precipitation for the month is 0.20 in over about 2 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 92°F
- Average low
- 56°F
- Precipitation
- 0.20 in
- Record high
- 107°FAug 9, 1990
- Record low
- 36°FAug 24, 1992
- Chance of a freeze
- 0%
- Days of 90°F or more
- 20.6
- Daylight
- 14 h 33 min to 13 h 14 min
- Cloud cover
- 30%
- Humidity
- 29%
- Dew point
- 38°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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Aug 1 | 95°F | 59°F | 102°F 1992 | 45°F 1981 | 6% | 0% |
| Aug 2 | 95°F | 59°F | 103°F 2015 | 46°F 2014 | 6% | 0% |
| Aug 3 | 95°F | 58°F | 104°F 2015 | 49°F 1985 | 6% | 0% |
| Aug 4 | 95°F | 58°F | 101°F 2000 | 41°F 1980 | 6% | 0% |
| Aug 5 | 95°F | 58°F | 100°F 1994 | 44°F 1980 | 6% | 0% |
| Aug 6 | 95°F | 58°F | 103°F 1990 | 48°F 1979 | 5% | 0% |
| Aug 7 | 94°F | 58°F | 103°F 2001 | 47°F 1980 | 5% | 0% |
| Aug 8 | 94°F | 58°F | 104°F 1983 | 45°F 1995 | 5% | 0% |
| Aug 9 | 94°F | 58°F | 107°F 1990 | 42°F 1995 | 5% | 0% |
| Aug 10 | 94°F | 57°F | 103°F 1991 | 47°F 1985 | 5% | 0% |
| Aug 11 | 93°F | 57°F | 103°F 1986 | 47°F 1997 | 5% | 0% |
| Aug 12 | 93°F | 57°F | 103°F 2014 | 46°F 1985 | 5% | 0% |
| Aug 13 | 93°F | 57°F | 102°F 1992 | 47°F 1995 | 5% | 0% |
| Aug 14 | 93°F | 56°F | 101°F 1990 | 43°F 1995 | 5% | 0% |
| Aug 15 | 92°F | 56°F | 105°F 1994 | 40°F 1999 | 5% | 0% |
| Aug 16 | 92°F | 56°F | 100°F 2003 | 43°F 1993 | 5% | 0% |
| Aug 17 | 92°F | 56°F | 100°F 2001 | 37°F 1978 | 5% | 0% |
| Aug 18 | 91°F | 55°F | 101°F 2001 | 37°F 1978 | 5% | 0% |
| Aug 19 | 91°F | 55°F | 103°F 2008 | 42°F 1980 | 6% | 0% |
| Aug 20 | 91°F | 55°F | 101°F 1992 | 41°F 1988 | 6% | 0% |
| Aug 21 | 90°F | 54°F | 100°F 2009 | 42°F 1980 | 6% | 0% |
| Aug 22 | 90°F | 54°F | 100°F 2005 | 45°F 1981 | 6% | 0% |
| Aug 23 | 90°F | 54°F | 99°F 2011 | 40°F 1978 | 6% | 0% |
| Aug 24 | 89°F | 54°F | 98°F 2000 | 36°F 1992 | 6% | 0% |
| Aug 25 | 89°F | 53°F | 98°F 2011 | 40°F 1992 | 6% | 0% |
| Aug 26 | 89°F | 53°F | 98°F 1988 | 37°F 1992 | 6% | 0% |
| Aug 27 | 88°F | 53°F | 100°F 2010 | 37°F 1994 | 6% | 0% |
| Aug 28 | 88°F | 52°F | 99°F 1986 | 39°F 1980 | 6% | 0% |
| Aug 29 | 88°F | 52°F | 99°F 2011 | 38°F 1980 | 6% | 0% |
| Aug 30 | 87°F | 52°F | 100°F 1998 | 41°F 2014 | 7% | 0% |
| Aug 31 | 87°F | 51°F | 97°F 2007 | 37°F 1977 | 7% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- August 1
- sunrise 6:36 AM, sunset 9:09 PM
- August 31
- sunrise 7:10 AM, sunset 8:24 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00106305 (Nampa Sugar Factory), public domain. Records: NOAA GHCN-Daily, station USC00106305, 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.