Hesperia weather in May

In May, Hesperia sees average daytime highs of 78°F and overnight lows near 54°F, with 0.2 in of rain across 1.6 wet days and about 13.8 hours of daylight. It is the 5th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 75°F in the first days to 82°F by the end. The sky is clear or mostly clear about 70% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 24 min at the start of May to 14 h 06 min by month's end. Set against the rest of the year, May is Hesperia's 6th-clearest and 2nd-windiest month. For the whole year in context, see Hesperia's year-round climate.

Daytime high
78°
5th warmest
Overnight low
54°
8th coldest
Rainfall
0.2 in
1.6 wet days
Daylight
13 h 48 min
4:52 AM – 6:39 PM
Cloud cover
27%
6th clearest
Wind
6 mph
2nd windiest
Solar energy
7.96 kWh/m²
Travel score
8.6
out of 10

Hesperia is city in San Bernardino County, California, United States.

Density
492/km²
people per km²
Founded
1988

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 75°F in the first days to 82°F by the end.

A typical May day in Hesperia reaches about 78°F in the afternoon and slips back to 54°F overnight — a 25°F spread between the day's warmth and the night's chill. On most days the high lands between 65°F and 90°F. Set against its neighbours, May runs about 8°F warmer than April and about 9°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17551
27551
37551
47652
57652
67652
77652
87652
97752
107753
117753
127753
137753
147853
157853
167853
177854
187854
197954
207954
217954
227954
238055
248055
258055
268155
278155
288156
298256
308256
318356

How May really feels in Hesperia

Once humidity and wind are folded in, May averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
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.

Hesperia weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan56° / 39°1.550.6104.5
Feb59° / 40°1.95.70.810.75.0
Mar64° / 44°1.14.60.511.76.7
Apr70° / 47°0.62.80.112.88.1
May78° / 54°0.21.6013.88.6
Jun87° / 60°0.10.4014.36.2
Jul93° / 67°0.32.4014.13.9
Aug93° / 67°0.21.7013.33.9
Sep87° / 62°0.21012.26.3
Oct76° / 53°0.31.5011.18.8
Nov64° / 44°0.52.40.210.27.2
Dec55° / 38°1.33.90.39.74.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 70% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 13% of May, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18020
28020
38020
48020
58020
68020
78020
88020
98020
108020
118020
128119
138119
148218
158218
168218
178317
188317
198317
208515
218515
228515
238515
248614
258614
268614
278614
288713
298713
308713
318713

Chance of precipitation in May

Any precipitation

Hesperia gets around 0.2 in of rain over 1.6 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 5% and peaks near 6% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
16
26
36
46
56
66
76
86
96
106
116
126
136
146
156
166
176
186
196
206
215
225
235
245
255
264
274
284
294
303
313

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in May

Winds average 6 mph in May.

Across May, daily wind ranges from about 6 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 24 min at the start of May to 14 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:06 AM to 4:43 AM, and sunset from 6:27 PM to 6:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.45:066:27
213.45:046:28
313.45:036:29
413.55:026:30
513.55:016:30
613.55:006:31
713.54:596:32
813.64:586:33
913.64:586:34
1013.64:576:34
1113.74:566:35
1213.74:556:36
1313.74:546:37
1413.74:536:38
1513.84:526:38
1613.84:526:39
1713.84:516:40
1813.84:506:41
1913.94:506:41
2013.94:496:42
2113.94:486:43
2213.94:486:44
2314.04:476:44
2414.04:466:45
2514.04:466:46
2614.04:456:47
2714.04:456:47
2814.14:446:48
2914.14:446:49
3014.14:446:49
3114.14:436:50

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.96 kWh/m².

For context, solar energy here swings from a low near 3.08 kWh/m² to a high of 8.51 kWh/m² in June across the year — May's 7.96 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.7Intense
27.7Intense
37.7Intense
47.7Intense
57.8Intense
67.8Intense
77.8Intense
87.8Intense
97.8Intense
107.8Intense
117.9Intense
127.9Intense
137.9Intense
147.9Intense
157.9Intense
168.0Intense
178.0Intense
188.0Intense
198.0Intense
208.0Intense
218.1Intense
228.1Intense
238.1Intense
248.1Intense
258.1Intense
268.2Intense
278.2Intense
288.2Intense
298.2Intense
308.3Intense
318.3Intense
Planning a trip in May

Is May a good time to visit Hesperia?

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

8.6
Sightseeing
2nd-best month of the year
8.1
Beach & pool
3rd-best month of the year

May is one of the better times to visit Hesperia for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Hesperia in May

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

In May, Hesperia sees daytime highs around 78°F and nights near 54°F. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

UV index in Hesperia in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hesperia peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 11Dec 16UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5High
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Hesperia 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 Hesperia is worst in September — around 30 µg/m³ PM2.5 (moderate), about 5.3× the cleanest month (December, 6 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1427 µg/m³Dec 146 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar9Good
Apr9Good
May9Good
Jun16Moderate
Jul12Good
Aug15Moderate
Sep30Moderate
Oct7Good
Nov6Good
Dec6Good
Location & terrain

Where is Hesperia?

Hesperia sits at 34.4°N, 117.3°W, 3,186 ft above sea level, in United States. The nearest listed city is Victorville, 7.5 mi away.

Topography around Hesperia

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Hesperia.

Within 2 miles, the terrain around Hesperia has only modest variations in elevation — a maximum elevation change of 354 ft around an average of 3,182 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 2,982 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 11,243 ft.

The land around Hesperia is covered by artificial surfaces (50%) and bare terrain (26%) within 2 miles, grassland (37%), artificial surfaces (23%) and shrubs (21%) within 10 miles, and bare terrain (34%), shrubs (23%) and grassland (20%) within 50 miles.

2 miles
354 ft
10 miles
2,982 ft
50 miles
11,243 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Victorville 7.5 mi · Apple Valley 8.1 mi · Adelanto 12 mi · Highland 21 mi · San Bernardino 22 mi · Rialto 22 mi · Fontana 24 mi · Colton 24 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 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 Hesperia (34.4264°, -117.3009°, elevation 3,186 ft), 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).