San Juan County Weather Forecast
San Juan County weather: 69°F, mainly clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
San Juan County is a county in Utah. San Juan County is a county in the United States. It has a population of about 14.500.
Right now it is 69°F (21°C) in San Juan County with mainly clear. It feels like 63°F. Today runs from 56°F to 76°F. Chance of precipitation is 17%. Sightseeing conditions score 8.9/10 - excellent - go now.
The best time to visit San Juan County is May, June, July, August and September. The climate is continental. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 83°F, while January is the coldest with lows near 19°F.
The closest major airport is Salt Lake City International Airport (SLC), about 248 mi away. Nearby highlights include Monument Valley, Canyonlands National Park, Dead Horse Point State Park and Arches National Park.
In plain terms. Today is slightly cooler than average for August. The forecast high of 76°F is 3.4°F below the 80°F typical for this month. The best window to be outside is roughly 8 AM to 11 AM, when temperature, rain chance and wind line up best. photography is the strongest bet in San Juan County today at 9/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Active alerts for San Juan County
Derived from the forecast. No official alert feed is wired for this country yet.
Weather in San Juan County right now
Source: Open-Meteo. Updated 7:22 PM, Aug 24 local time.
See the San Juan County forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for San Juan County
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Mon, Aug 24 | 🌦️ Light drizzle | 76° / 56° | 17% · 0,0 in | 17 mph | 7 |
| Tue, Aug 25 | ☁️ Overcast | 81° / 61° | 13% | 13 mph | 7 |
| Wed, Aug 26 | ☁️ Overcast | 84° / 65° | 7% | 14 mph | 8 |
| Thu, Aug 27 | 🌦️ Light drizzle | 85° / 64° | 3% · 0,0 in | 15 mph | 8 |
| Fri, Aug 28 | ☁️ Overcast | 83° / 62° | 2% | 13 mph | 7 |
| Sat, Aug 29 | 🌦️ Light drizzle | 78° / 62° | 16% · 0,0 in | 14 mph | 5 |
| Sun, Aug 30 | 🌧️ Showers | 70° / 55° | 17% · 1,1 in | 11 mph | 6 |
| Mon, Aug 31 | 🌧️ Heavy drizzle | 69° / 53° | 31% · 0,5 in | 8 mph | 8 |
| Tue, Sep 1 | 🌦️ Drizzle | 69° / 55° | 17% · 0,1 in | 16 mph | 6 |
| Wed, Sep 2 | 🌤️ Mainly clear | 71° / 52° | 18% | 13 mph | 8 |
| Thu, Sep 3 | ☀️ Clear sky | 73° / 55° | 6% | 16 mph | 8 |
| Fri, Sep 4 | ☁️ Overcast | 74° / 57° | 8% | 18 mph | 7 |
| Sat, Sep 5 | 🌤️ Mainly clear | 73° / 57° | 17% | 17 mph | 8 |
| Sun, Sep 6 | ☁️ Overcast | 74° / 56° | 19% | 14 mph | 8 |
| Mon, Sep 7 | ☁️ Overcast | 78° / 58° | 18% | 14 mph | 7 |
| Tue, Sep 8 | 🌦️ Light drizzle | 75° / 57° | 19% · 0,0 in | 12 mph | 6 |
Climate in San Juan County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 36° | 19° | 1,0 in | ★★☆☆☆ |
| February | 41° | 24° | 1,5 in | ★★☆☆☆ |
| March | 50° | 30° | 0,9 in | ★★★☆☆ |
| April | 56° | 34° | 1,3 in | ★★★★☆ |
| May | 66° | 42° | 1,2 in | ★★★★☆ |
| June | 80° | 56° | 1,4 in | ★★★★★ |
| July | 83° | 60° | 1,5 in | ★★★★★ |
| August | 80° | 58° | 2,2 in | ★★★★☆ |
| September | 71° | 51° | 1,7 in | ★★★★☆ |
| October | 60° | 41° | 4,1 in | ★★★☆☆ |
| November | 45° | 29° | 0,8 in | ★★★☆☆ |
| December | 41° | 25° | 0,6 in | ★★★☆☆ |
Climate type: Continental. Source: Open-Meteo archive (ERA5).
Weather map for San Juan County
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in San Juan County
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Best time to visit San Juan County
Go in May, June, July, August and September. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
Explore San Juan County
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is San Juan County?
San Juan County is a county in Utah. Its coordinates are 37.625, -109.8. It lies in North America.
What is the weather like in San Juan County right now?
It is currently 69°F (21°C) with mainly clear. Humidity is 44% and wind is 12 mph.
When is the best time to visit San Juan County?
May, June, July, August and September offer the most comfortable conditions in San Juan County, which has a continental climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is San Juan County in?
San Juan County observes America/Denver (UTC-06:00). The local time is 7:22 PM.
How many people live in San Juan County?
San Juan County has a population of approximately 14.500.
What is the nearest airport to San Juan County?
The closest airports are Salt Lake City International Airport (SLC), 248 mi away.
What are the top things to do in San Juan County?
Popular options include Monument Valley, Canyonlands National Park, Dead Horse Point State Park, Arches National Park, Mesa Verde National Park and Mesa Verde (UNESCO World Heritage Site).
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 24, 2026 at 7:22 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
