Highland weather in April

In April, Highland sees average daytime highs of 68°F and overnight lows near 46°F, with 0.8 in of precipitation across 3.3 wet days and about 12.8 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 65°F in the first days to 71°F by the end. The sky is clear or mostly clear about 61% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of April to 13 h 18 min by month's end. Set against the rest of the year, April is Highland's 8th-clearest and 1st-windiest month. For the whole year in context, see Highland's year-round climate.

Daytime high
68°
7th warmest
Overnight low
46°
6th coldest
Precipitation
0.8 in
3.3 wet days
Daylight
12 h 54 min
5:24 AM – 6:15 PM
Cloud cover
35%
8th clearest
Wind
4 mph
1st windiest
Solar energy
6.93 kWh/m²
Travel score
7.7
out of 10

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

Density
1,121/km²
people per km²
Founded
1891

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 65°F in the first days to 71°F by the end.

A typical April day in Highland reaches about 68°F in the afternoon and slips back to 46°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 54°F and 80°F. Set against its neighbours, April runs about 5°F warmer than March and about 7°F cooler than May.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
16444
26444
36544
46544
56544
66544
76544
86545
96645
106645
116645
126645
136745
146746
156746
166746
176846
186846
196947
206947
216947
227047
237048
247048
257148
267148
277149
287149
297249
307249

How April really feels in Highland

Once humidity and wind are folded in, April 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

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

Highland weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan57° / 40°2.25.60.9104.7
Feb58° / 40°2.76.61.110.74.8
Mar62° / 43°1.65.70.911.76.2
Apr68° / 46°0.83.30.312.87.7
May75° / 52°0.32.5013.88.7
Jun83° / 58°0.10.7014.27.8
Jul89° / 65°0.52.90145.4
Aug89° / 65°0.43013.35.3
Sep85° / 61°0.31.6012.27.2
Oct75° / 53°0.52.1011.18.8
Nov64° / 45°0.72.90.210.27.2
Dec57° / 39°1.74.60.59.84.7

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 61% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 13% of April, with mostly cloudy or overcast conditions the remaining 25%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16931
27030
37030
47030
57129
67129
77129
87129
97129
107327
117327
127327
137426
147525
157525
167624
177624
187624
197624
207624
217723
227723
237723
247921
257921
267921
277921
287822
297822
307822

Chance of precipitation in April

Any precipitationSnow

Highland gets around 0.8 in of rain and snow over 3.3 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 11% and peaks near 15% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)Snow chance (%)
1152
2152
3152
4152
5142
6142
7142
8132
9132
10122
11121
12121
13111
14111
15101
16101
1791
1891
1991
2091
2191
2280
2380
2480
2580
2680
2780
2880
2980
3090

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April 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%151015202530
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

Wind in April

Winds average 4 mph in April, the windiest month of the year.

Across April, daily wind ranges from about 4 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 18 min at the start of April to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over April. Sunrise moves from 5:44 AM to 5:07 AM, and sunset from 6:03 PM to 6:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:446:03
212.45:436:04
312.45:416:05
412.45:406:05
512.55:386:06
612.55:376:07
712.55:366:08
812.65:346:08
912.65:336:09
1012.65:316:10
1112.75:306:11
1212.75:296:11
1312.75:276:12
1412.85:266:13
1512.85:256:14
1612.95:246:15
1712.95:226:15
1812.95:216:16
1913.05:206:17
2013.05:186:18
2113.05:176:19
2213.15:166:19
2313.15:156:20
2413.15:146:21
2513.25:126:22
2613.25:116:22
2713.25:106:23
2813.35:096:24
2913.35:086:25
3013.35:076:26

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.93 kWh/m².

For context, solar energy here swings from a low near 3.04 kWh/m² to a high of 8.39 kWh/m² in June across the year — April's 6.93 kWh/m² falls in the middle.

02468151015202530
Solar energy (kWh/m²)Level
16.3Intense
26.4Intense
36.4Intense
46.5Intense
56.5Intense
66.5Intense
76.6Intense
86.6Intense
96.7Intense
106.7Intense
116.8Intense
126.8Intense
136.8Intense
146.9Intense
156.9Intense
167.0Intense
177.0Intense
187.0Intense
197.1Intense
207.1Intense
217.2Intense
227.2Intense
237.2Intense
247.3Intense
257.3Intense
267.3Intense
277.3Intense
287.4Intense
297.4Intense
307.4Intense
Planning a trip in April

Is April a good time to visit Highland?

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

7.7
Sightseeing
4th-best month of the year
3.9
Beach & pool
7th-best month of the year

April is one of the better times to visit Highland for general sightseeing.

What to pack for Highland in April

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

In April, Highland sees daytime highs around 68°F and nights near 46°F. Pack sun protection. Worth having: a warm layer. About 3 days see rain.

sun protectiona warm layer

UV index in Highland in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Highland 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 Highland in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Highland 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 Highland?

Highland sits at 34.1°N, 117.2°W, 1,309 ft above sea level, in United States. The nearest listed city is San Bernardino, 5.0 mi away.

Topography around Highland

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

Within 2 miles, the terrain around Highland has significant variations in elevation — a maximum elevation change of 1,558 ft around an average of 1,394 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 6,699 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 11,411 ft.

The land around Highland is covered by artificial surfaces (57%) within 2 miles, trees (28%), artificial surfaces (28%) and shrubs (24%) within 10 miles, and shrubs (29%) and bare terrain (21%) within 50 miles.

2 miles
1,558 ft
10 miles
6,699 ft
50 miles
11,411 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: San Bernardino 5.0 mi · Redlands 5.0 mi · Loma Linda 6.2 mi · Colton 6.8 mi · Rialto 9.3 mi · Bloomington 11 mi · Yucaipa 12 mi · Fontana 13 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 Highland (34.1283°, -117.2087°, elevation 1,309 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).