St. Peters weather in July: St. Peters, Missouri: normal highs, lows, rain and records for July
St. Peters in July has a normal high of 88°F and a normal low of 68°F, a daily mean of 78°F, holding near 88°F all month. Measurable precipitation falls on 9 days in a normal July, 4.23 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 20°C, 107 mm of precipitation in July.
- NOAA stationSt Peters (2 mi SE)
- Station IDUSC00237475
- Location38.77°N 90.59°W
- Elevation575 ft (175 m)
- From the center1 miles
- Population61,398
- Jan 39° 21°
- Feb 45° 25°
- Mar 56° 33°
- Apr 67° 43°
- May 76° 54°
- Jun 84° 63°
- Jul 88° 68°
- Aug 87° 65°
- Sep 81° 57°
- Oct 69° 45°
- Nov 55° 35°
- Dec 44° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is St. Peters in July?
The normal high is 88°F and the normal low 68°F, for a daily mean of 77.8°F. July is 3.9°F warmer than June and 1.5°F warmer than August. July is the warmest month of the year in St. Peters and the 4th wettest. From one year to the next July's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Julys in three average between 75°F and 81°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 | 88°F | 67°F | 31% | 21% |
| July 8 | 88°F | 68°F | 30% | 20% |
| July 15 | 88°F | 68°F | 28% | 19% |
| July 22 | 88°F | 68°F | 27% | 18% |
| July 31 | 88°F | 67°F | 26% | 17% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 12, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 88°F | 67°F | 31% | 21% | 14 h 50 min |
| July 2 | 88°F | 67°F | 31% | 20% | 14 h 50 min |
| July 3 | 88°F | 67°F | 31% | 20% | 14 h 50 min |
| July 4 | 88°F | 67°F | 30% | 20% | 14 h 50 min |
| July 5 | 88°F | 67°F | 30% | 20% | 14 h 50 min |
| July 6 | 88°F | 67°F | 30% | 20% | 14 h 50 min |
| July 7 | 88°F | 68°F | 30% | 20% | 14 h 50 min |
| July 8 | 88°F | 68°F | 30% | 20% | 14 h 50 min |
| July 9 | 88°F | 68°F | 29% | 19% | 14 h 50 min |
| July 10 | 88°F | 68°F | 29% | 19% | 14 h 40 min |
| July 11 | 88°F | 68°F | 29% | 19% | 14 h 40 min |
| July 12 | 88°F | 68°F | 29% | 19% | 14 h 40 min |
| July 13 | 88°F | 68°F | 29% | 19% | 14 h 40 min |
| July 14 | 88°F | 68°F | 29% | 19% | 14 h 40 min |
| July 15 | 88°F | 68°F | 28% | 19% | 14 h 40 min |
| July 16 | 88°F | 68°F | 28% | 18% | 14 h 40 min |
| July 17 | 88°F | 68°F | 28% | 18% | 14 h 40 min |
| July 18 | 88°F | 68°F | 28% | 18% | 14 h 30 min |
| July 19 | 88°F | 68°F | 28% | 18% | 14 h 30 min |
| July 20 | 88°F | 68°F | 27% | 18% | 14 h 30 min |
| July 21 | 88°F | 68°F | 27% | 18% | 14 h 30 min |
| July 22 | 88°F | 68°F | 27% | 18% | 14 h 30 min |
| July 23 | 88°F | 68°F | 27% | 18% | 14 h 30 min |
| July 24 | 88°F | 68°F | 27% | 18% | 14 h 30 min |
| July 25 | 88°F | 68°F | 27% | 18% | 14 h 20 min |
| July 26 | 88°F | 67°F | 27% | 18% | 14 h 20 min |
| July 27 | 88°F | 67°F | 27% | 18% | 14 h 20 min |
| July 28 | 88°F | 67°F | 27% | 18% | 14 h 20 min |
| July 29 | 88°F | 67°F | 27% | 18% | 14 h 20 min |
| July 30 | 88°F | 67°F | 26% | 18% | 14 h 20 min |
| July 31 | 88°F | 67°F | 26% | 17% | 14 h 10 min |
- Normal high
- 88°FJuly average
- Normal low
- 68°FJuly average
- Precipitation
- 4.23 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 13
- Daylight
- 14 h 50 min to 14 h 10 minJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 28
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00237475; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in St. Peters in July?
On a given July day the chance of 0.01 inch or more is 28% on average, highest around July 1 (31%). In all, 4.23 in falls on 9 days of a normal July, 1 of them with an inch or more.
In a normal July in St. Peters, 13 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00237475.
How does July in St. Peters compare across Missouri?
Across the 134 places PlainClimate covers in Missouri, July normal highs run from 85°F in Canton to 92°F in Malden; St. Peters's is 88°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.