Fergus weather in May

In May, Fergus sees average daytime highs of 18°C and overnight lows near 7°C, with 89 mm of precipitation across 11.9 wet days and about 14.5 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 15°C in the first days to 20°C by the end. The sky is clear or mostly clear about 25% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of May to 15 hours by month's end. Set against the rest of the year, May is Fergus's 5th-clearest and 8th-windiest month. For the whole year in context, see Fergus's year-round climate.

Daytime high
18°
5th warmest
Overnight low
8th coldest
Precipitation
89 mm
11.9 wet days
Daylight
14 h 30 min
5:02 AM – 7:33 PM
Cloud cover
63%
5th clearest
Wind
13 km/h
8th windiest
Solar energy
5.86 kWh/m²
Travel score
5.3
out of 10

Fergus is town in Wellington County, Ontario, Canada.

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 15°C in the first days to 20°C by the end.

A typical May day in Fergus reaches about 18°C in the afternoon and slips back to 7°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 25°C. Set against its neighbours, May runs about 7°C warmer than April and about 5°C cooler than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1144
2154
3155
4155
5155
6165
7165
8166
9166
10166
11176
12176
13176
14177
15177
16177
17187
18187
19187
20188
21198
22198
23198
24199
25199
26209
27209
28209
292010
302010
312010

How May really feels in Fergus

Once humidity and wind are folded in, May 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

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

Fergus weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -11°6711.8129.10.0
Feb-2° / -11°549.18.810.20.0
Mar / -6°6210.46.611.60.2
Apr11° / 86123.213.22.5
May18° / 8911.90.114.55.3
Jun23° / 12°9611.6015.26.5
Jul25° / 15°8411.1014.96.8
Aug24° / 14°7710.5013.86.9
Sep20° / 10°7910012.36.2
Oct13° / 8211.70.710.83.3
Nov / -2°7611.75.39.50.4
Dec-0° / -7°6511.910.68.80.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23862
33862
43862
54060
63961
73961
84060
94060
103961
114060
124060
134159
144159
154159
164258
174159
184258
194258
204357
214357
224456
234456
244456
254456
264456
274456
284456
294456
304357
314357

Chance of precipitation in May

Any precipitationSnow

Fergus gets around 89 mm of rain and snow over 11.9 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 38% and peaks near 41% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1412
2412
3412
4412
5411
6411
7411
8401
9401
10401
11391
12391
13381
14381
15381
16371
17371
18371
19361
20360
21360
22360
23350
24350
25350
26350
27360
28360
29360
30360
31360

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
196310
296310
396310
496310
595410
695410
795410
894510
993520
1093520
1193520
1293520
1392620
1492620
1591630
1691630
1790730
1889740
1989740
2086851
2186851
2284961
2384961
2483971
25811072
26801082
27791182
28791182
29781282
30771283
31761383

Wind in May

Winds average 13 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 min at the start of May to 15 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over May. Sunrise moves from 5:21 AM to 4:49 AM, and sunset from 7:16 PM to 7:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:217:16
214.05:207:17
314.05:197:18
414.05:177:20
514.15:167:21
614.15:147:22
714.25:137:23
814.25:127:24
914.25:107:25
1014.35:097:27
1114.35:087:28
1214.45:077:29
1314.45:067:30
1414.45:047:31
1514.55:037:32
1614.55:027:33
1714.65:017:34
1814.65:007:36
1914.64:597:37
2014.74:587:38
2114.74:577:39
2214.74:567:40
2314.84:557:41
2414.84:547:42
2514.84:547:43
2614.84:537:44
2714.94:527:45
2814.94:517:46
2914.94:517:47
3015.04:507:47
3115.04:497:48

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.86 kWh/m².

For context, solar energy here swings from a low near 1.26 kWh/m² to a high of 6.25 kWh/m² in June across the year — May's 5.86 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.6Bright
55.6Bright
65.6Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
206.0Bright
216.0Bright
226.0Bright
236.0Intense
246.0Intense
256.0Intense
266.0Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in May

Is May a good time to visit Fergus?

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

5.3
Sightseeing
5th-best month of the year
1.6
Beach & pool
5th-best month of the year

May is a reasonable time to visit Fergus for sightseeing.

What to pack for Fergus in May

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

In May, Fergus sees daytime highs around 18°C and nights near 7°C. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

UV index in Fergus in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Fergus peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 22UV 9Jan 11UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May6High
Jun9Very high
Jul8Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Fergus in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Fergus is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1515 µg/m³Nov 218 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar13Moderate
Apr13Moderate
May14Moderate
Jun15Moderate
Jul16Moderate
Aug14Moderate
Sep13Moderate
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Fergus?

Fergus sits at 43.7°N, 80.4°W, 400 m above sea level, in Canada. The nearest listed city is Guelph, 20 km away.

Topography around Fergus

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

Within 3 km, the terrain around Fergus has only modest variations in elevation — a maximum elevation change of 58 m around an average of 416 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 177 m; within 80 km, significant variations in elevation — a maximum elevation change of 473 m.

The land around Fergus is covered by cropland (43%) and trees (30%) within 3 km, cropland (60%) and trees (28%) within 16 km, and cropland (49%) and trees (30%) within 80 km.

3 km
58 m
16 km
177 m
80 km
473 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Guelph 20 km · Waterloo 29 km · Hespeler 31 km · Orangeville 32 km · Kitchener 33 km · Forest Heights 34 km · Fiddlesticks 35 km · Caledon 36 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 Fergus (43.706°, -80.3776°, elevation 400 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).