Humid cities · Montana
How humid is Helena in summer?
Helena right now
38°FA few clouds
- Today48°F / 34°FClouds
- Tomorrow55°F / 32°FClouds
- Monday51°F / 31°FClouds
Chilly. The sun's just for show.
Live from OpenWeatherMap. Alerts from the National Weather Service.
Across June, July and August, the dew point in Helena averages about 42.9°F, which is dry on the usual dew point scale.
July is the muggiest month, with the dew point averaging about 44.3°F. On NOAA’s hour by hour normals, no hour of the year averages a dew point of 65°F or more, though a muggy spell can still turn up. That makes it the 6th driest summer air of the 124 US cities we track.
Last updated
The highest dew point in the forecast for the next 48 hours is about 34°F, which is dry.
Helena’s summer dew point averages about 42.9°F. The capital of not sweating.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Summer humidity at a glance
| Dew point, June to August | 42.9°F |
|---|---|
| Muggiest month | July, 44.3°F |
| Hours a year at a 65°F dew point or more | none |
| How summer feels | dry |
The dew point is the temperature the air would have to cool to for dew to form, so the higher it is, the more water the air holds. Forecasters usually call under 55°F comfortable, 55 to 65°F sticky and 65°F or more muggy; 70°F or more feels tropical.
Cities with about the same summer air
- Great Falls, Montana: about 43.2°F
- Spokane, Washington: about 43.3°F
- Casper, Wyoming: about 42.4°F
More about the weather here
Source: NOAA U.S. Climate Normals, hourly, 1991 to 2020, station USW00024144. Average dew points, not the stickiest days.