Stony Plain weather in August

In August, Stony Plain sees average daytime highs of 21°C and overnight lows near 10°C, with 60 mm of rain across 10.2 wet days and about 14.6 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 22°C in the first days to 20°C by the end. The sky is clear or mostly clear about 36% of the time in August, and the air most often feels dry.

Daylight stretches from about 15 h 30 min at the start of August to 13 h 36 min by month's end. Set against the rest of the year, August is Stony Plain's 1st-clearest and 12th-windiest month. For the whole year in context, see Stony Plain's year-round climate.

Daytime high
21°
2nd warmest
Overnight low
10°
11th coldest
Rainfall
60 mm
10.2 wet days
Daylight
14 h 36 min
5:22 AM – 7:58 PM
Cloud cover
55%
1st clearest
Wind
10 km/h
12th windiest
Solar energy
5.25 kWh/m²
Travel score
6.6
out of 10

Stony Plain is town in Alberta.

Density
504/km²
people per km²
Founded
1907

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 22°C in the first days to 20°C by the end.

A typical August day in Stony Plain reaches about 21°C in the afternoon and slips back to 10°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 27°C. Set against its neighbours, August runs about 1°C cooler than July and about 5°C warmer than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12311
22311
32211
42211
52211
62211
72211
82211
92211
102211
112211
122210
132210
142210
152210
162210
172210
182110
192110
20219
21219
22219
23219
24219
25219
26209
27208
28208
29208
30208
31198

How August really feels in Stony Plain

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Stony Plain weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-7° / -15°195.66.27.80.0
Feb-4° / -13°123.44.49.40.0
Mar / -9°175.3511.50.0
Apr10° / -2°326.6313.72.1
May16° / 558.50.915.65.1
Jun20° / 8713.6016.75.6
Jul22° / 11°9213.3016.36.3
Aug21° / 10°6010.2014.66.6
Sep16° / 397.60.312.55.5
Oct / -1°246.2210.32.0
Nov-1° / -8°235.95.48.30.0
Dec-6° / -14°154.85.57.30.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
25941
35842
45743
55644
65644
75545
85545
95545
105446
115545
125545
135545
145545
155545
165644
175644
185644
195644
205743
215743
225743
235743
245644
255545
265545
275545
285446
295446
305347
315248

Chance of precipitation in August

Any precipitation

Stony Plain gets around 60 mm of rain over 10.2 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 33% and peaks near 38% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
138
238
338
438
537
637
737
837
936
1036
1135
1235
1334
1434
1533
1632
1731
1831
1930
2030
2129
2229
2329
2429
2529
2629
2729
2829
2929
3030
3130

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the dry band about 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
167285
268275
368275
469265
570255
671245
772244
873234
973234
1075223
1176213
1277203
1379192
1480182
1581172
1683152
1784142
1886131
1987121
2088111
2189101
229091
239181
249370
259460
269550
279550
289640
299730
309730
319730

Wind in August

Winds average 10 km/h in August, the calmest month.

Across August, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 15 h 30 min at the start of August to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 114 minutes over August. Sunrise moves from 4:56 AM to 5:49 AM, and sunset from 8:28 PM to 7:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
115.54:568:28
215.54:588:26
315.45:008:24
415.45:018:22
515.35:038:21
615.25:058:19
715.25:068:17
815.15:088:15
915.15:108:13
1015.05:128:11
1114.95:138:09
1214.95:158:07
1314.85:178:05
1414.75:198:02
1514.75:208:00
1614.65:227:58
1714.55:247:56
1814.55:267:54
1914.45:277:51
2014.35:297:49
2114.35:317:47
2214.25:337:45
2314.15:357:42
2414.15:367:40
2514.05:387:38
2613.95:407:35
2713.95:427:33
2813.85:447:30
2913.75:457:28
3013.65:477:26
3113.65:497:23

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.25 kWh/m².

For context, solar energy here swings from a low near 0.82 kWh/m² to a high of 6.23 kWh/m² in June across the year — August's 5.25 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.5Bright
95.5Bright
105.4Bright
115.4Bright
125.4Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.2Bright
185.2Bright
195.2Bright
205.1Bright
215.1Bright
225.0Bright
235.0Bright
245.0Bright
254.9Bright
264.9Bright
274.8Bright
284.8Bright
294.7Bright
304.6Bright
314.6Bright
Planning a trip in August

Is August a good time to visit Stony Plain?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.6
Sightseeing
1st-best month of the year
4.2
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Stony Plain for sightseeing.

What to pack for Stony Plain in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Stony Plain sees daytime highs around 21°C and nights near 10°C. Worth packing: rain gear and sun protection. About 10 days see rain.

rain gearsun protection

UV index in Stony Plain in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Stony Plain peaks around July 14 at about 7 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 14UV 7Dec 19UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr3Moderate
May5High
Jun6High
Jul7Very high
Aug5Moderate
Sep3Moderate
Oct2Moderate
Nov1Low
Dec0Low

Air quality in Stony Plain in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Stony Plain is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (October, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodJul 2319 µg/m³Oct 207 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb9Good
Mar11Good
Apr10Good
May13Moderate
Jun12Good
Jul19Moderate
Aug18Moderate
Sep11Good
Oct7Good
Nov8Good
Dec10Good
Location & terrain

Where is Stony Plain?

Stony Plain sits at 53.5°N, 114.0°W, 705 m above sea level, in Canada. The nearest listed city is Spruce Grove, 6.0 km away.

Topography around Stony Plain

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Stony Plain.

Within 3 km, the terrain around Stony Plain has only modest variations in elevation — a maximum elevation change of 44 m around an average of 707 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 159 m; within 80 km, significant variations in elevation — a maximum elevation change of 446 m.

The land around Stony Plain is covered by cropland (35%) and grassland (27%) within 3 km, cropland (37%), grassland (29%) and trees (28%) within 16 km, and cropland (34%), grassland (33%) and trees (27%) within 80 km.

3 km
44 m
16 km
159 m
80 km
446 m
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Spruce Grove 6.0 km · St. Albert 27 km · Wîhkwêntôwin 32 km · Edmonton 35 km · Leduc 42 km · Sherwood Park 45 km · Camrose 97 km · Sylvan Lake 136 km

Canada travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 83% of US
price level, 2025
GDP per capita
$55,698
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 53%none 35%Muslim 5%Hindu 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Stony Plain (53.5334°, -114.002°, elevation 705 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).