Grand County Climate and Average Weather
Climate of Grand County: average temperatures, rainfall and seasons month by month.
Climate in Grand 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 | 43° | 26° | 0,4 in | ★★★☆☆ |
| February | 53° | 32° | 1,1 in | ★★★☆☆ |
| March | 65° | 40° | 0,7 in | ★★★★☆ |
| April | 71° | 45° | 0,5 in | ★★★★★ |
| May | 80° | 53° | 0,5 in | ★★★★★ |
| June | 95° | 67° | 0,2 in | ★★★★★ |
| July | 99° | 72° | 0,3 in | ★★★★☆ |
| August | 95° | 70° | 0,3 in | ★★★★★ |
| September | 86° | 61° | 0,2 in | ★★★★★ |
| October | 72° | 48° | 1,7 in | ★★★★☆ |
| November | 55° | 34° | 1,1 in | ★★★☆☆ |
| December | 45° | 28° | 0,5 in | ★★★☆☆ |
Climate type: Semi-arid. Source: Open-Meteo archive (ERA5).
Recent extremes in Grand County
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Grand County compares with nearby places
Annual averages, and the difference against Grand County.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Moab | 0 mi | 60°F | about the same | 8 in |
| Arches National Park | 11 mi | 58°F | 34°F cooler | 7 in |
| Dead Horse Point State Park | 12 mi | 55°F | 37°F cooler | 7 in |
| Canyonlands National Park | 25 mi | 58°F | 34°F cooler | 5 in |
| Goblin Valley State Park | 63 mi | 57°F | 35°F cooler | 5 in |
Best time to visit Grand County
Go in April, 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.
What this means for Grand County
Today is about average for August. The forecast high of 97°F is in line with the 95°F typical for this month.
A 12% chance means most of the area stays dry; a passing shower is possible but short.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 85°F.
What to pack, what to skip
- Lightweight, light-coloured clothing and a refillable water bottle
- Sunglasses, a brimmed hat and SPF 30+
- Avoid long hikes after mid-morning; start at dawn or leave it for a cooler day.
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
Summary
Grand County is a county in Utah. Grand County is a county in the United States. It has a population of about 9.600.
Right now it is 80°F (27°C) in Grand County with mainly clear. It feels like 80°F. Today runs from 74°F to 97°F. Chance of precipitation is 12%. Sightseeing conditions score 9.3/10 - excellent - go now.
The best time to visit Grand County is April, May, June, July, August and September. The climate is semi-arid. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 99°F, while January is the coldest with lows near 26°F.
The closest major airport is Salt Lake City International Airport (SLC), about 200 mi away. Nearby highlights include Arches National Park, Dead Horse Point State Park, Canyonlands National Park and Goblin Valley State Park.
In plain terms. Today is about average for August. The forecast high of 97°F is in line with the 95°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. outdoors is the strongest bet in Grand County today at 9.4/10. 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.
Quick facts about Grand County
| Type | County |
|---|---|
| State | Utah |
| Country | United States |
| Continent | North America |
| Coordinates | 38°34′23.9″N 109°32′59.3″W (38.5733, -109.5498) |
| Population | 9.600 |
| Local time | 6:56 AM (UTC-06:00) |
| Best months | April, May, June, July, August and September |
| Climate | Semi-arid |
Weather map for Grand 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.
Explore Grand County
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Grand County?
Grand County is a county in Utah. Its coordinates are 38.5733, -109.5498. It lies in North America.
What is the weather like in Grand County right now?
It is currently 80°F (27°C) with mainly clear. Humidity is 42% and wind is 5 mph.
When is the best time to visit Grand County?
April, May, June, July, August and September offer the most comfortable conditions in Grand County, which has a semi-arid climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Grand County in?
Grand County observes America/Denver (UTC-06:00). The local time is 6:56 AM.
How many people live in Grand County?
Grand County has a population of approximately 9.600.
What is the nearest airport to Grand County?
The closest airports are Salt Lake City International Airport (SLC), 200 mi away and Denver International Airport (DEN), 276 mi away.
What are the top things to do in Grand County?
Popular options include Arches National Park, Dead Horse Point State Park, Canyonlands National Park, Goblin Valley State Park, Capitol Reef National Park and Black Canyon of the Gunnison National Park.
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 23, 2026 at 6:56 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
