Great Falls, MT weather in July
In July, Great Falls sees highs around 84°F and lows around 51°F: warm, with some rain. Expect about 7 wet days. It is one of the warmest months in Great Falls.
- Normal high
- 84°F
- Normal low
- 51°F
- Wet days
- 7
- 1.2 in total
- Muggy days
- 0
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 79°F | 87°F |
| Normal low | 49°F | 53°F |
| Chance of a wet day | 30% | 21% |
| Sunrise / sunset | 5:32 am / 9:26 pm | 6:02 am / 9:01 pm |
| Daylight | 15.9 h | 15.0 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
A typical July day
- 6 am58°Fdew point 46°F
- 9 am70°Fdew point 47°F
- Noon78°Fdew point 44°F
- 3 pm82°Fdew point 42°F
- 6 pm79°Fdew point 43°F
- 9 pm68°Fdew point 45°F
NOAA hourly normals (local standard time) from Great Falls Intl Airport (4 mi away); average wind 9 mph; clear or few clouds in 74% of daytime hours, mostly cloudy or overcast in 17%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F9 of 31
- Hot dayshigh 90°F or more10 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow7 of 31
- Notable rainat least 0.10 in3 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per July, counted from daily records for each year 1991-2020.
Rain in July
Normal precipitation is 1.2 in; a dry July brings about 0.4 in and a wet one about 1.7 in (25th and 75th percentiles). About 1 day brings half an inch or more.
How July varies from year to year
- Warmest July, 1991-20202007: average high 94°F
- Coolest July1993: average high 69°F
- Wettest July1993: 4.7 in
- Driest July2017: 0.08 in
- Highest reading104°F (July 19, 2007)
- Lowest reading36°F (July 16, 1999)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
July compared with June and August
| June | July | August | |
|---|---|---|---|
| Normal high | 73°F | 84°F | 83°F |
| Normal low | 46°F | 51°F | 50°F |
| Wet days | 12 | 7 | 7 |
| Comfortable days | 18 | 9 | 9 |
| Daylight | 15.9 h | 15.5 h | 14.2 h |
Highs change by +11°F from June and -1°F into August.
Nearby alternatives in July
- Cooler: Big Sky, MT153 mi · high 78°F · 10 wet days
How Great Falls ranks in July
- Normal high246th warmest of 378 cities; 3rd of 6 in Montana
- Wet days135th driest of 378
- Comfortable days62nd most of 340
What to pack for Great Falls in July
- Layers – afternoons near 84°F but nights near 51°F
- Sunglasses and sunscreen – about 15.5 hours of daylight and highs near 84°F
Heating and cooling
July has 48 heating degree days and 136 cooling degree days (base 65°F), 2% of the year's total heating and cooling demand.
Questions
How hot is Great Falls in July?
The normal high is 84°F and the normal low is 51°F. From 1991 to 2020 the hottest July reading was 104°F (most recently on July 19, 2007).
Does it rain a lot in Great Falls in July?
About 7 days in July have at least 0.01 in of precipitation, and the normal total is 1.2 in. The wettest July in 1991-2020 was in 1993 (4.7 in); the driest was in 2017 (0.08 in).
Is July a good time to visit Great Falls?
July ranks 4th of 12 months on our comfort score for Great Falls (62 out of 100). It has about 9 comfortable days and about 10 days at 90°F or hotter. The best month is June.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates, humidity and wind by hour and cloud cover: Great Falls Intl Airport (USW00024143), 4.2 mi WSW of the city center, 3,664 ft (335 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Great Falls International Airport (727750-24143), 4.3 mi WSW of the city center, 3,667 ft (338 ft higher than the city). Hourly observations, 1991-2020.