St. Paul weather in August: St. Paul, Minnesota: normal highs, lows, rain and records for August
St. Paul in August has a normal high of 80°F and a normal low of 62°F, a daily mean of 71°F, falling from 82°F on the 1st to 78°F by the 31st. Measurable precipitation falls on 10 days in a normal August, 4.10 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 17°C, 104 mm of precipitation in August.
- NOAA stationSt Paul Downtown Airport
- Station IDUSW00014927
- Location44.93°N 93.06°W
- Elevation700 ft (213 m)
- From the center3 miles
- Population307,465
- Jan 24° 9°
- Feb 29° 13°
- Mar 42° 25°
- Apr 57° 37°
- May 69° 49°
- Jun 79° 59°
- Jul 83° 64°
- Aug 80° 62°
- Sep 72° 53°
- Oct 58° 40°
- Nov 42° 27°
- Dec 29° 15°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is St. Paul in August?
The normal high is 80°F and the normal low 62°F, for a daily mean of 71.1°F. August is 2.2°F cooler than July and 8.2°F warmer than September. August is the 2nd warmest month of the year in St. Paul and the 2nd wettest. Across the month the normal high falls 4°F, from 82°F on August 1 to 78°F on August 31. From one year to the next August's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Augusts 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 32%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 82°F | 64°F | 32% | 19% |
| August 8 | 82°F | 63°F | 32% | 19% |
| August 15 | 81°F | 62°F | 32% | 19% |
| August 22 | 80°F | 61°F | 32% | 19% |
| August 31 | 78°F | 59°F | 32% | 18% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 82°F | 64°F | 32% | 19% | 14 h 40 min |
| August 2 | 82°F | 64°F | 32% | 19% | 14 h 40 min |
| August 3 | 82°F | 64°F | 32% | 19% | 14 h 40 min |
| August 4 | 82°F | 63°F | 32% | 19% | 14 h 40 min |
| August 5 | 82°F | 63°F | 32% | 19% | 14 h 30 min |
| August 6 | 82°F | 63°F | 32% | 19% | 14 h 30 min |
| August 7 | 82°F | 63°F | 32% | 19% | 14 h 30 min |
| August 8 | 82°F | 63°F | 32% | 19% | 14 h 30 min |
| August 9 | 81°F | 63°F | 32% | 19% | 14 h 20 min |
| August 10 | 81°F | 63°F | 32% | 19% | 14 h 20 min |
| August 11 | 81°F | 63°F | 32% | 19% | 14 h 20 min |
| August 12 | 81°F | 63°F | 32% | 19% | 14 h 20 min |
| August 13 | 81°F | 62°F | 32% | 19% | 14 h 10 min |
| August 14 | 81°F | 62°F | 32% | 19% | 14 h 10 min |
| August 15 | 81°F | 62°F | 32% | 19% | 14 h 10 min |
| August 16 | 81°F | 62°F | 32% | 19% | 14 h 10 min |
| August 17 | 81°F | 62°F | 32% | 19% | 14 h |
| August 18 | 80°F | 62°F | 32% | 19% | 14 h |
| August 19 | 80°F | 62°F | 32% | 19% | 14 h |
| August 20 | 80°F | 61°F | 32% | 19% | 13 h 50 min |
| August 21 | 80°F | 61°F | 32% | 19% | 13 h 50 min |
| August 22 | 80°F | 61°F | 32% | 19% | 13 h 50 min |
| August 23 | 80°F | 61°F | 32% | 19% | 13 h 50 min |
| August 24 | 79°F | 61°F | 32% | 19% | 13 h 40 min |
| August 25 | 79°F | 60°F | 32% | 19% | 13 h 40 min |
| August 26 | 79°F | 60°F | 32% | 19% | 13 h 40 min |
| August 27 | 79°F | 60°F | 32% | 19% | 13 h 30 min |
| August 28 | 79°F | 60°F | 32% | 19% | 13 h 30 min |
| August 29 | 78°F | 59°F | 32% | 19% | 13 h 30 min |
| August 30 | 78°F | 59°F | 32% | 18% | 13 h 20 min |
| August 31 | 78°F | 59°F | 32% | 18% | 13 h 20 min |
- Normal high
- 80°FAugust average
- Normal low
- 62°FAugust average
- Precipitation
- 4.10 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 14 h 40 min to 13 h 20 minAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 19
- Sunshine
- 79%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014927; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in St. Paul in August?
On a given August day the chance of 0.01 inch or more is 32% on average, highest around August 1 (32%). In all, 4.10 in falls on 10 days of a normal August, 1 of them with an inch or more.
In a normal August in St. Paul, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014927.
How humid and windy is St. Paul in August?
At 3 p.m. the normal temperature is 78°F with 52% relative humidity and a dew point of 58°F; at 6 a.m. it is 62°F with 87% humidity. The wind averages 7.4 mph, most often from the south-southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 62°F | 58°F | 87% | 5.3 mph | 66% |
| 9 a.m. | 69°F | 59°F | 71% | 7.8 mph | 68% |
| noon | 75°F | 59°F | 57% | 9.7 mph | 65% |
| 3 p.m. | 78°F | 58°F | 52% | 10.5 mph | 64% |
| 6 p.m. | 74°F | 59°F | 58% | 8.9 mph | 71% |
| 9 p.m. | 68°F | 60°F | 75% | 6.1 mph | 72% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014927. 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 August in St. Paul?
The warmest August temperature on this station's record (since 1872) is 104°F, on August 10, 1947; the coldest is 39°F, on August 20, 1950. The wettest August brought 8.74 in (1875).
The August mean against the 1991-2020 normal of 71.1°F: 2021 73.8°F (+2.7), 2022 72.5°F (+1.4), 2023 73.7°F (+2.6), 2024 71.4°F (+0.3), 2026 73.6°F (+2.5). 5 of 5 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.8°F | +2.7°F | 7.12 in |
| 2022 | 72.5°F | +1.4°F | 3.90 in |
| 2023 | 73.7°F | +2.6°F | 3.13 in |
| 2024 | 71.4°F | +0.3°F | 5.52 in |
| 2026 | 73.6°F | +2.5°F | 0.25 in |
Source: records: ACIS, station USW00014927; recent months: ACIS, station USW00014927. Records and recent months use complete months only.
How does August in St. Paul compare across Minnesota?
Across the 129 places PlainClimate covers in Minnesota, August normal highs run from 70°F in Grand Marais to 82°F in Little Falls; St. Paul's is 80°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.