Least humid places in the US in July
Ranked by the lowest mean dew point in July (hourly normals; cities with an hourly station only). First: Reno, NV (39°F), of 343 cities.
| Rank | City | Mean dew point | High | Wet days |
|---|---|---|---|---|
| 1 | Reno, NV | 39°F | 94°F | 2 |
| 2 | South Lake Tahoe, CA | 41°F | 80°F | 1 |
| 3 | Incline Village, NV | 41°F | 78°F | 1 |
| 4 | Flagstaff, AZ | 42°F | 82°F | 12 |
| 5 | Grand Canyon Village, AZ | 42°F | 85°F | 11 |
| 6 | Lancaster, CA | 42°F | 98°F | 1 |
| 7 | Palmdale, CA | 42°F | 98°F | 1 |
| 8 | Victorville, CA | 42°F | 98°F | 1 |
| 9 | Steamboat Springs, CO | 42°F | 83°F | 9 |
| 10 | Page, AZ | 42°F | 98°F | 5 |
| 11 | Las Vegas, NV | 43°F | 105°F | 3 |
| 12 | Boise, ID | 43°F | 93°F | 2 |
| 13 | Casper, WY | 44°F | 89°F | 7 |
| 14 | Great Falls, MT | 45°F | 84°F | 7 |
| 15 | Missoula, MT | 45°F | 85°F | 6 |
| 16 | Provo, UT | 45°F | 95°F | 5 |
| 17 | Salt Lake City, UT | 45°F | 94°F | 4 |
| 18 | Leavenworth, WA | 45°F | 87°F | 3 |
| 19 | Cheyenne, WY | 47°F | 84°F | 11 |
| 20 | Sedona, AZ | 47°F | 97°F | 6 |
| 21 | Spokane, WA | 47°F | 84°F | 4 |
| 22 | Whitefish, MT | 48°F | 82°F | 7 |
| 23 | Billings, MT | 48°F | 86°F | 8 |
| 24 | Centennial, CO | 48°F | 87°F | 10 |
| 25 | Highlands Ranch, CO | 48°F | 84°F | 9 |
Which states lead
California (4 of the top 25), Arizona (4 of the top 25), Montana (4 of the top 25), then 6 more states. The top 25 range from 39°F to 48°F; the median across all 343 cities is 63°F.
The other end: most humid in July
Least humid places through the year
| Month | First place | Mean dew point |
|---|---|---|
| January | Fairbanks, AK | -7°F |
| February | Fairbanks, AK | -3°F |
| March | Fairbanks, AK | 2°F |
| April | Fairbanks, AK | 19°F |
| May | Flagstaff, AZ | 24°F |
| June | Flagstaff, AZ | 26°F |
| July | Reno, NV | 39°F |
| August | Reno, NV | 37°F |
| September | Reno, NV | 34°F |
| October | Fairbanks, AK | 20°F |
| November | Fairbanks, AK | 1°F |
| December | Fairbanks, AK | -7°F |
343 cities with data for this measure. Folded suburbs share their lead city's values and are not listed separately. Methodology.