San Juan County Weather in August
Average highs run from 88°F on August 1 to 82°F on August 31, and lows from 60°F to 56°F. Normal precipitation for the month is 1.42 in over about 8 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
- 85°F
- Average low
- 59°F
- Precipitation
- 1.42 in
- Record high
- 106°FAug 18, 1905
- Record low
- 38°FAug 23, 1968
- Chance of a freeze
- 0%
- Days of 90°F or more
- 7.7
- Daylight
- 14 h 04 min to 13 h 01 min
- Cloud cover
- 49%
- Humidity
- 37%
- Dew point
- 44°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 | 88°F | 60°F | 98°F 1993 | 50°F 1931 | 29% | 0% |
| Aug 2 | 88°F | 60°F | 98°F 1922 | 50°F 1906 | 29% | 0% |
| Aug 3 | 87°F | 60°F | 99°F 2000 | 45°F 1922 | 29% | 0% |
| Aug 4 | 87°F | 60°F | 100°F 1905 | 46°F 1922 | 28% | 0% |
| Aug 5 | 87°F | 60°F | 100°F 1905 | 44°F 1928 | 28% | 0% |
| Aug 6 | 87°F | 60°F | 99°F 1995 | 45°F 1922 | 28% | 0% |
| Aug 7 | 87°F | 60°F | 100°F 1905 | 50°F 1939 | 28% | 0% |
| Aug 8 | 87°F | 60°F | 105°F 1905 | 46°F 1939 | 28% | 0% |
| Aug 9 | 86°F | 60°F | 97°F 1969 | 47°F 1957 | 27% | 0% |
| Aug 10 | 86°F | 59°F | 98°F 1995 | 45°F 1914 | 27% | 0% |
| Aug 11 | 86°F | 59°F | 100°F 1922 | 43°F 1908 | 27% | 0% |
| Aug 12 | 86°F | 59°F | 101°F 1922 | 46°F 1908 | 27% | 0% |
| Aug 13 | 86°F | 59°F | 101°F 1996 | 45°F 1908 | 27% | 0% |
| Aug 14 | 86°F | 59°F | 100°F 1996 | 44°F 1922 | 26% | 0% |
| Aug 15 | 85°F | 59°F | 98°F 1905 | 42°F 1968 | 26% | 0% |
| Aug 16 | 85°F | 59°F | 99°F 1905 | 42°F 1976 | 26% | 0% |
| Aug 17 | 85°F | 59°F | 99°F 1905 | 44°F 1960 | 26% | 0% |
| Aug 18 | 85°F | 58°F | 106°F 1905 | 42°F 1922 | 26% | 0% |
| Aug 19 | 85°F | 58°F | 100°F 1905 | 40°F 1922 | 25% | 0% |
| Aug 20 | 85°F | 58°F | 100°F 1905 | 42°F 1922 | 25% | 0% |
| Aug 21 | 84°F | 58°F | 102°F 1905 | 40°F 1922 | 25% | 0% |
| Aug 22 | 84°F | 58°F | 100°F 1905 | 43°F 1922 | 25% | 0% |
| Aug 23 | 84°F | 58°F | 100°F 1905 | 38°F 1968 | 25% | 0% |
| Aug 24 | 84°F | 58°F | 98°F 1905 | 42°F 1922 | 25% | 0% |
| Aug 25 | 84°F | 57°F | 95°F 2007 | 44°F 1922 | 25% | 0% |
| Aug 26 | 84°F | 57°F | 95°F 1994 | 45°F 1908 | 24% | 0% |
| Aug 27 | 83°F | 57°F | 100°F 1905 | 44°F 1922 | 24% | 0% |
| Aug 28 | 83°F | 57°F | 100°F 1905 | 41°F 1920 | 24% | 0% |
| Aug 29 | 83°F | 57°F | 100°F 1905 | 43°F 1922 | 24% | 0% |
| Aug 30 | 83°F | 56°F | 99°F 1905 | 40°F 1914 | 24% | 0% |
| Aug 31 | 82°F | 56°F | 101°F 1905 | 40°F 1908 | 23% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- August 1
- sunrise 6:23 AM, sunset 8:27 PM
- August 31
- sunrise 6:49 AM, sunset 7:50 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00426053 (Natural Bridges Nm), public domain. Records: NOAA GHCN-Daily, station USC00420738, 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.