Castle Rock weather in July: Castle Rock, Colorado: normal highs, lows, rain and records for July
Castle Rock in July has a normal high of 86°F and a normal low of 56°F, a daily mean of 71°F, holding near 86°F all month. Measurable precipitation falls on 8 days in a normal July, 2.32 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 14°C, 59 mm of precipitation in July.
- NOAA stationCastle Rock
- Station IDUSC00051401
- Location39.41°N 104.91°W
- Elevation6,185 ft (1,885 m)
- Population83,213
- Jan 46° 18°
- Feb 47° 20°
- Mar 54° 27°
- Apr 59° 33°
- May 68° 42°
- Jun 80° 51°
- Jul 86° 56°
- Aug 84° 55°
- Sep 77° 47°
- Oct 65° 35°
- Nov 54° 26°
- Dec 46° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Castle Rock in July?
The normal high is 86°F and the normal low 56°F, for a daily mean of 71.1°F. July is 5.8°F warmer than June and 2.0°F warmer than August. July is the warmest month of the year in Castle Rock and the 2nd wettest. From one year to the next July's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Julys in three average between 69°F and 73°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 31%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 85°F | 55°F | 25% | 15% |
| July 8 | 86°F | 56°F | 26% | 16% |
| July 15 | 86°F | 57°F | 27% | 17% |
| July 22 | 86°F | 57°F | 29% | 17% |
| July 31 | 85°F | 57°F | 31% | 18% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 14, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 85°F | 55°F | 25% | 15% | 14 h 50 min |
| July 2 | 85°F | 55°F | 25% | 15% | 14 h 50 min |
| July 3 | 85°F | 55°F | 25% | 15% | 14 h 50 min |
| July 4 | 85°F | 55°F | 25% | 15% | 14 h 50 min |
| July 5 | 85°F | 55°F | 25% | 15% | 14 h 50 min |
| July 6 | 85°F | 56°F | 25% | 16% | 14 h 50 min |
| July 7 | 86°F | 56°F | 25% | 16% | 14 h 50 min |
| July 8 | 86°F | 56°F | 26% | 16% | 14 h 50 min |
| July 9 | 86°F | 56°F | 26% | 16% | 14 h 50 min |
| July 10 | 86°F | 56°F | 26% | 16% | 14 h 50 min |
| July 11 | 86°F | 56°F | 26% | 16% | 14 h 50 min |
| July 12 | 86°F | 57°F | 26% | 16% | 14 h 50 min |
| July 13 | 86°F | 57°F | 27% | 16% | 14 h 40 min |
| July 14 | 86°F | 57°F | 27% | 17% | 14 h 40 min |
| July 15 | 86°F | 57°F | 27% | 17% | 14 h 40 min |
| July 16 | 86°F | 57°F | 28% | 17% | 14 h 40 min |
| July 17 | 86°F | 57°F | 28% | 17% | 14 h 40 min |
| July 18 | 86°F | 57°F | 28% | 17% | 14 h 40 min |
| July 19 | 86°F | 57°F | 28% | 17% | 14 h 40 min |
| July 20 | 86°F | 57°F | 28% | 17% | 14 h 40 min |
| July 21 | 86°F | 57°F | 29% | 17% | 14 h 30 min |
| July 22 | 86°F | 57°F | 29% | 17% | 14 h 30 min |
| July 23 | 86°F | 57°F | 29% | 17% | 14 h 30 min |
| July 24 | 86°F | 57°F | 30% | 18% | 14 h 30 min |
| July 25 | 86°F | 57°F | 30% | 18% | 14 h 30 min |
| July 26 | 86°F | 57°F | 30% | 18% | 14 h 30 min |
| July 27 | 86°F | 57°F | 31% | 18% | 14 h 20 min |
| July 28 | 86°F | 57°F | 31% | 18% | 14 h 20 min |
| July 29 | 86°F | 57°F | 31% | 18% | 14 h 20 min |
| July 30 | 86°F | 57°F | 31% | 18% | 14 h 20 min |
| July 31 | 85°F | 57°F | 31% | 18% | 14 h 20 min |
- Normal high
- 86°FJuly average
- Normal low
- 56°FJuly average
- Precipitation
- 2.32 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 11
- Daylight
- 14 h 50 min to 14 h 20 minJuly 1 to July 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 26
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00051401; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Castle Rock in July?
On a given July day the chance of 0.01 inch or more is 28% on average, highest around July 31 (31%). In all, 2.32 in falls on 8 days of a normal July.
In a normal July in Castle Rock, 11 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00051401.
What are the records for July in Castle Rock?
The warmest July temperature on this station's record (since 1893) is 102°F, on July 11, 2022; the coldest is 30°F, on July 23, 1895. The wettest July brought 5.12 in (1923).
The July mean against the 1991-2020 normal of 71.1°F: 2021 77.3°F (+6.2), 2022 79.0°F (+7.9), 2023 70.8°F (−0.3), 2024 70.7°F (−0.4), 2025 72.8°F (+1.8). 3 of 5 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 77.3°F | +6.2°F | 1.97 in |
| 2022 | 79.0°F | +7.9°F | 1.62 in |
| 2023 | 70.8°F | −0.3°F | 1.74 in |
| 2024 | 70.7°F | −0.4°F | 2.07 in |
| 2025 | 72.8°F | +1.8°F | – |
Source: records: ACIS, station USC00051401; recent months: ACIS, station USC00051401. Records and recent months use complete months only.
How does July in Castle Rock 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; Castle Rock's is 86°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.