Rock Forest weather in August

In August, Rock Forest sees average daytime highs of 23°C and overnight lows near 14°C, with 114 mm of rain across 13.7 wet days and about 13.9 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 22°C by the end. The sky is clear or mostly clear about 25% of the time in August, and the air most often feels dry.

Daylight stretches from about 14 h 36 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Rock Forest's 2nd-clearest and 12th-windiest month. For the whole year in context, see Rock Forest's year-round climate.

Daytime high
23°
2nd warmest
Overnight low
14°
11th coldest
Rainfall
114 mm
13.7 wet days
Daylight
13 h 54 min
4:54 AM – 6:50 PM
Cloud cover
61%
2nd clearest
Wind
9 km/h
12th windiest
Solar energy
4.92 kWh/m²
Travel score
6.3
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 22°C by the end.

A typical August day in Rock Forest reaches about 23°C in the afternoon and slips back to 14°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 27°C. Set against its neighbours, August runs about 1°C cooler than July and about 4°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12415
22415
32414
42414
52414
62414
72414
82414
92414
102314
112314
122314
132314
142314
152314
162314
172314
182313
192313
202313
212313
222313
232213
242213
252213
262213
272213
282212
292212
302212
312212

How August really feels in Rock Forest

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.

Rock Forest weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-5° / -14°7412.212.28.90.0
Feb-4° / -13°6310.310.910.10.0
Mar / -7°7912.29.211.60.0
Apr10° / 9612.74.413.22.0
May17° / 11314.20.514.64.8
Jun22° / 12°12814.1015.45.8
Jul24° / 14°11914.7015.16.2
Aug23° / 14°11413.7013.96.3
Sep19° / 10211.6012.35.7
Oct12° / 11813.21.510.72.9
Nov / -3°8912.96.99.30.3
Dec-2° / -9°8913.711.88.60.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 22% of August, with mostly cloudy or overcast conditions the remaining 53%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34753
44852
54852
64753
74753
84753
94753
104753
114753
124654
134654
144654
154753
164753
174753
184753
194654
204753
214753
224753
234852
244753
254852
264852
274852
284852
294852
304852
314753

Chance of precipitation in August

Any precipitation

Rock Forest gets around 114 mm of rain over 13.7 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 44% and peaks near 46% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
146
246
346
446
546
646
746
846
946
1046
1146
1246
1345
1445
1545
1644
1744
1843
1943
2042
2142
2242
2341
2441
2541
2641
2740
2840
2940
3040
3140

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 31% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1213036131
2213036131
3223035131
4223035131
5223035130
6223034130
7223134130
8233134130
9233133130
10243133120
11253132120
12253132120
13263131110
14273231110
15273231100
16283230100
1729323090
1830322990
1931322980
2032322880
2133312880
2235312770
2336302670
2438302570
2539292470
2641292370
2742282270
2844282170
2945282170
3046272060
3148271960

Wind in August

Winds average 9 km/h in August, the calmest month.

Across August, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 36 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over August. Sunrise moves from 4:36 AM to 5:13 AM, and sunset from 7:12 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.64:367:12
214.64:377:11
314.54:387:09
414.54:407:08
514.44:417:07
614.44:427:05
714.34:437:04
814.34:447:02
914.34:467:01
1014.24:476:59
1114.24:486:58
1214.14:496:56
1314.14:516:55
1414.04:526:53
1514.04:536:52
1613.94:546:50
1713.94:556:48
1813.84:576:47
1913.84:586:45
2013.74:596:43
2113.75:006:41
2213.65:026:40
2313.65:036:38
2413.55:046:36
2513.55:056:34
2613.45:076:32
2713.45:086:31
2813.35:096:29
2913.35:106:27
3013.25:126:25
3113.25:136:23

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.92 kWh/m².

For context, solar energy here swings from a low near 1.18 kWh/m² to a high of 5.72 kWh/m² in June across the year — August's 4.92 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.1Bright
105.1Bright
115.1Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
164.9Bright
174.9Bright
184.9Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.6Bright
304.5Bright
314.5Bright
Planning a trip in August

Is August a good time to visit Rock Forest?

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

6.3
Sightseeing
1st-best month of the year
4.8
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Rock Forest for sightseeing.

What to pack for Rock Forest in August

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

In August, Rock Forest sees daytime highs around 23°C and nights near 14°C. Worth packing: light clothes, rain gear and sun protection. About 14 days see rain.

light clothesrain gearsun protection

UV index in Rock Forest in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rock Forest peaks around July 13 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateModerateLowJul 13UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May6High
Jun6High
Jul8Very high
Aug3Moderate
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Rock Forest?

Rock Forest sits at 45.4°N, 72.0°W, 240 m above sea level, in Canada. The nearest listed city is Sherbrooke, 9.0 km away.

Topography around Rock Forest

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

Within 3 km, the terrain around Rock Forest has only modest variations in elevation — a maximum elevation change of 94 m around an average of 228 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 430 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,288 m.

The land around Rock Forest is covered by trees (68%) within 3 km, trees (66%) within 16 km, and trees (75%) within 80 km.

3 km
94 m
16 km
430 m
80 km
1,288 m
treesgrasslandcroplandartificial surfaceswater
August weather nearby: Sherbrooke 9.0 km · Magog 16 km · Granby 58 km · Drummondville 70 km · Victoriaville 77 km · Saint-Hyacinthe 81 km · Mont-Saint-Hilaire 96 km · Beloeil 97 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 Rock Forest (45.357°, -71.9968°, elevation 240 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).