Longmont weather in July: Longmont, Colorado: normal highs, lows, rain and records for July
Longmont in July has a normal high of 91°F and a normal low of 55°F, a daily mean of 73°F, holding near 91°F all month. Measurable precipitation falls on 6 days in a normal July, 1.69 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 33°C and low of 13°C, 43 mm of precipitation in July.
- NOAA stationLongmont (2 mi ESE)
- Station IDUSC00055116
- Location40.17°N 105.08°W
- Elevation4,950 ft (1,509 m)
- From the center1 miles
- Population99,818
- Jan 45° 14°
- Feb 47° 17°
- Mar 57° 26°
- Apr 63° 32°
- May 73° 41°
- Jun 84° 51°
- Jul 91° 55°
- Aug 88° 54°
- Sep 80° 46°
- Oct 66° 33°
- Nov 54° 24°
- Dec 45° 15°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Longmont in July?
The normal high is 91°F and the normal low 55°F, for a daily mean of 73.1°F. July is 5.9°F warmer than June and 2.3°F warmer than August. July is the warmest month of the year in Longmont and the 5th wettest. Across the month the normal high rises 1°F, from 89°F on July 1 to 90°F on July 31. From one year to the next July's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Julys in three average between 71°F and 75°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 24%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 89°F | 54°F | 22% | 12% |
| July 8 | 91°F | 55°F | 21% | 12% |
| July 15 | 91°F | 56°F | 21% | 12% |
| July 22 | 91°F | 56°F | 22% | 12% |
| July 31 | 90°F | 56°F | 24% | 12% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 18, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 89°F | 54°F | 22% | 12% | 15 h |
| July 2 | 89°F | 54°F | 22% | 12% | 15 h |
| July 3 | 90°F | 54°F | 22% | 12% | 15 h |
| July 4 | 90°F | 55°F | 22% | 12% | 15 h |
| July 5 | 90°F | 55°F | 21% | 12% | 15 h |
| July 6 | 90°F | 55°F | 21% | 12% | 15 h |
| July 7 | 90°F | 55°F | 21% | 12% | 15 h |
| July 8 | 91°F | 55°F | 21% | 12% | 14 h 50 min |
| July 9 | 91°F | 55°F | 21% | 12% | 14 h 50 min |
| July 10 | 91°F | 55°F | 21% | 12% | 14 h 50 min |
| July 11 | 91°F | 55°F | 21% | 12% | 14 h 50 min |
| July 12 | 91°F | 56°F | 21% | 12% | 14 h 50 min |
| July 13 | 91°F | 56°F | 21% | 12% | 14 h 50 min |
| July 14 | 91°F | 56°F | 21% | 12% | 14 h 50 min |
| July 15 | 91°F | 56°F | 21% | 12% | 14 h 50 min |
| July 16 | 91°F | 56°F | 21% | 12% | 14 h 50 min |
| July 17 | 91°F | 56°F | 21% | 12% | 14 h 40 min |
| July 18 | 92°F | 56°F | 21% | 12% | 14 h 40 min |
| July 19 | 91°F | 56°F | 21% | 12% | 14 h 40 min |
| July 20 | 91°F | 56°F | 22% | 12% | 14 h 40 min |
| July 21 | 91°F | 56°F | 22% | 12% | 14 h 40 min |
| July 22 | 91°F | 56°F | 22% | 12% | 14 h 40 min |
| July 23 | 91°F | 56°F | 22% | 12% | 14 h 30 min |
| July 24 | 91°F | 56°F | 23% | 12% | 14 h 30 min |
| July 25 | 91°F | 56°F | 23% | 12% | 14 h 30 min |
| July 26 | 91°F | 56°F | 23% | 12% | 14 h 30 min |
| July 27 | 91°F | 56°F | 23% | 12% | 14 h 30 min |
| July 28 | 91°F | 56°F | 23% | 12% | 14 h 30 min |
| July 29 | 91°F | 56°F | 23% | 12% | 14 h 20 min |
| July 30 | 91°F | 56°F | 23% | 12% | 14 h 20 min |
| July 31 | 90°F | 56°F | 24% | 12% | 14 h 20 min |
- Normal high
- 91°FJuly average
- Normal low
- 55°FJuly average
- Precipitation
- 1.69 inmonth total
- Days with precipitation
- 60.01 inch or more
- Days at 90°F or more
- 17
- Daylight
- 15 h to 14 h 20 minJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 28
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00055116; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Longmont in July?
On a given July day the chance of 0.01 inch or more is 22% on average, highest around July 31 (24%). In all, 1.69 in falls on 6 days of a normal July.
In a normal July in Longmont, 17 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00055116.
What are the records for July in Longmont?
The warmest July temperature on this station's record (since 1893) is 106°F, on July 7, 1973; the coldest is 38°F, on July 20, 1994. The wettest July brought 4.93 in (1918).
The July mean against the 1991-2020 normal of 73.1°F: 2021 75.3°F (+2.2), 2022 76.0°F (+2.9), 2023 72.9°F (−0.2), 2024 73.9°F (+0.8), 2025 74.6°F (+1.5), 2026 78.3°F (+5.2). 5 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 75.3°F | +2.2°F | 1.30 in |
| 2022 | 76.0°F | +2.9°F | 1.74 in |
| 2023 | 72.9°F | −0.2°F | 1.72 in |
| 2024 | 73.9°F | +0.8°F | 0.83 in |
| 2025 | 74.6°F | +1.5°F | 0.68 in |
| 2026 | 78.3°F | +5.2°F | 0.72 in |
Source: records: ACIS, station USC00055116; recent months: ACIS, station USC00055116. Records and recent months use complete months only.
How does July in Longmont compare across Colorado?
Across the 125 places PlainClimate covers in Colorado, July normal highs run from 71°F in Fairplay to 95°F in Lamar; Longmont's is 91°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.