Casper weather in July: Casper, Wyoming: normal highs, lows, rain and records for July
Casper in July has a normal high of 89°F and a normal low of 53°F, a daily mean of 71°F, rising from 86°F on the 1st to 90°F by the 31st. Measurable precipitation falls on 7 days in a normal July, 1.19 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 32°C and low of 12°C, 30 mm of precipitation in July.
- NOAA stationCasper-Natrona County Airport
- Station IDUSW00024089
- Location42.90°N 106.46°W
- Elevation5,338 ft (1,627 m)
- Population58,823
- Jan 35° 15°
- Feb 38° 15°
- Mar 49° 23°
- Apr 56° 28°
- May 67° 37°
- Jun 80° 45°
- Jul 89° 53°
- Aug 87° 51°
- Sep 76° 42°
- Oct 60° 31°
- Nov 46° 22°
- Dec 35° 15°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Casper in July?
The normal high is 89°F and the normal low 53°F, for a daily mean of 71.0°F. July is 8.5°F warmer than June and 2.0°F warmer than August. July is the warmest month of the year in Casper and the 4th wettest. Across the month the normal high rises 4°F, from 86°F on July 1 to 90°F on July 31. From one year to the next July's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Julys in three average between 68°F and 74°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 | 86°F | 50°F | 24% | 10% |
| July 8 | 88°F | 52°F | 23% | 9% |
| July 15 | 90°F | 53°F | 22% | 9% |
| July 22 | 90°F | 54°F | 22% | 8% |
| July 31 | 90°F | 55°F | 22% | 8% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 21, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 86°F | 50°F | 24% | 10% | 15 h 20 min |
| July 2 | 86°F | 50°F | 24% | 10% | 15 h 20 min |
| July 3 | 87°F | 50°F | 23% | 10% | 15 h 20 min |
| July 4 | 87°F | 50°F | 23% | 10% | 15 h 20 min |
| July 5 | 87°F | 51°F | 23% | 10% | 15 h 20 min |
| July 6 | 87°F | 51°F | 23% | 10% | 15 h 10 min |
| July 7 | 88°F | 51°F | 23% | 9% | 15 h 10 min |
| July 8 | 88°F | 52°F | 23% | 9% | 15 h 10 min |
| July 9 | 88°F | 52°F | 22% | 9% | 15 h 10 min |
| July 10 | 89°F | 52°F | 22% | 9% | 15 h 10 min |
| July 11 | 89°F | 52°F | 22% | 9% | 15 h 10 min |
| July 12 | 89°F | 53°F | 22% | 9% | 15 h 10 min |
| July 13 | 89°F | 53°F | 22% | 9% | 15 h 10 min |
| July 14 | 89°F | 53°F | 22% | 9% | 15 h 10 min |
| July 15 | 90°F | 53°F | 22% | 9% | 15 h |
| July 16 | 90°F | 54°F | 22% | 9% | 15 h |
| July 17 | 90°F | 54°F | 22% | 8% | 15 h |
| July 18 | 90°F | 54°F | 22% | 8% | 15 h |
| July 19 | 90°F | 54°F | 22% | 8% | 15 h |
| July 20 | 90°F | 54°F | 22% | 8% | 15 h |
| July 21 | 90°F | 54°F | 22% | 8% | 14 h 50 min |
| July 22 | 90°F | 54°F | 22% | 8% | 14 h 50 min |
| July 23 | 90°F | 55°F | 22% | 8% | 14 h 50 min |
| July 24 | 90°F | 55°F | 22% | 8% | 14 h 50 min |
| July 25 | 90°F | 55°F | 22% | 9% | 14 h 50 min |
| July 26 | 90°F | 55°F | 22% | 8% | 14 h 50 min |
| July 27 | 90°F | 55°F | 22% | 8% | 14 h 40 min |
| July 28 | 90°F | 55°F | 22% | 8% | 14 h 40 min |
| July 29 | 90°F | 55°F | 22% | 8% | 14 h 40 min |
| July 30 | 90°F | 55°F | 22% | 8% | 14 h 40 min |
| July 31 | 90°F | 55°F | 22% | 8% | 14 h 30 min |
- Normal high
- 89°FJuly average
- Normal low
- 53°FJuly average
- Precipitation
- 1.19 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 17
- Daylight
- 15 h 20 min to 14 h 30 minJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 28
- Sunshine
- 86%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024089; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Casper in July?
On a given July day the chance of 0.01 inch or more is 22% on average, highest around July 1 (24%). In all, 1.19 in falls on 7 days of a normal July.
In a normal July in Casper, 17 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024089.
How humid and windy is Casper in July?
At 3 p.m. the normal temperature is 86°F with 20% relative humidity and a dew point of 40°F; at 6 a.m. it is 59°F with 65% humidity. The wind averages 8.8 mph, most often from the northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 59°F | 48°F | 65% | 5.9 mph | 83% |
| 9 a.m. | 74°F | 48°F | 39% | 9.7 mph | 84% |
| noon | 83°F | 43°F | 24% | 9.6 mph | 83% |
| 3 p.m. | 86°F | 40°F | 20% | 11.1 mph | 79% |
| 6 p.m. | 81°F | 41°F | 24% | 11.6 mph | 79% |
| 9 p.m. | 69°F | 45°F | 43% | 9.1 mph | 78% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024089. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for July in Casper?
The warmest July temperature on Casper's official record (since 1939) is 104°F, on July 12, 1954; the coldest is 30°F, on July 4, 1972. The wettest July brought 3.54 in (2007).
The July mean against the 1991-2020 normal of 71.0°F: 2021 73.2°F (+2.2), 2022 72.5°F (+1.5), 2023 69.8°F (−1.2), 2024 70.2°F (−0.8), 2025 71.8°F (+0.8), 2026 75.8°F (+4.8). 4 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.2°F | +2.2°F | 1.83 in |
| 2022 | 72.5°F | +1.5°F | 0.31 in |
| 2023 | 69.8°F | −1.2°F | 1.28 in |
| 2024 | 70.2°F | −0.8°F | 0.53 in |
| 2025 | 71.8°F | +0.8°F | 1.14 in |
| 2026 | 75.8°F | +4.8°F | 0.13 in |
Source: records: ACIS, NWS threaded record CPRthr; recent months: ACIS, station USW00024089. Records and recent months use complete months only.
How does July in Casper compare across Wyoming?
Across the 71 places PlainClimate covers in Wyoming, July normal highs run from 75°F in Sundance to 93°F in Basin; Casper's is 89°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.