Claremont weather in April

In April, Claremont sees average daytime highs of 70°F and overnight lows near 51°F, with 1.0 in of rain across 3.7 wet days and about 12.8 hours of daylight. It is the 7th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 67°F in the first days to 72°F by the end. The sky is clear or mostly clear about 56% 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 Claremont's 8th-clearest and 2nd-windiest month. For the whole year in context, see Claremont's year-round climate.

Daytime high
70°
7th warmest
Overnight low
51°
6th coldest
Rainfall
1.0 in
3.7 wet days
Daylight
12 h 54 min
5:26 AM – 6:17 PM
Cloud cover
38%
8th clearest
Wind
4 mph
2nd windiest
Solar energy
6.56 kWh/m²
Travel score
7.8
out of 10

Claremont is city on the eastern edge of Los Angeles County, California, United States.

Density
1,039/km²
people per km²
Founded
1907

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 67°F in the first days to 72°F by the end.

A typical April day in Claremont reaches about 70°F in the afternoon and slips back to 51°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 59°F and 81°F. Set against its neighbours, April runs about 4°F warmer than March and about 4°F cooler than May.

40°50°60°70°80°151015202530
Avg high (°F)Avg low (°F)
16749
26749
36749
46749
56749
66849
76849
86849
96849
106849
116950
126950
136950
146950
156950
167050
177051
187051
197151
207151
217151
227151
237152
247252
257252
267252
277253
287253
297353
307353

Claremont weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan63° / 44°3.65.9106.2
Feb63° / 46°4.06.610.76.2
Mar66° / 48°2.46.311.76.8
Apr70° / 51°1.03.712.87.8
May74° / 55°0.42.213.78.6
Jun79° / 59°0.10.314.28.9
Jul85° / 64°0.10.5147.1
Aug87° / 65°0.00.213.36.5
Sep84° / 63°0.20.912.27.4
Oct78° / 57°0.72.611.18.7
Nov69° / 49°1.02.810.28.0
Dec62° / 44°2.55.39.86.3

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 56% 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 31%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16436
26436
36535
46535
56634
66634
76733
86733
96832
106832
116832
126931
136931
146931
157030
167030
177129
187129
197129
207228
217228
227228
237228
247228
257228
267228
277228
287228
297129
307129

Chance of precipitation in April

Any precipitation

Claremont gets around 1.0 in of rain over 3.7 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 12% and peaks near 16% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
116
215
315
415
515
614
714
814
914
1014
1113
1213
1313
1412
1512
1612
1711
1811
1911
2011
2111
2210
2310
2410
2510
2610
2710
2810
2910
3010

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 97% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12982
13982
14982
15973
16973
17973
18964
19964
20955
21955
22955
23946
24946
25946
26946
27946
28946
29946
30937

Wind in April

Winds average 4 mph in April.

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 5:46 AM to 5:09 AM, and sunset from 6:05 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:466:05
212.45:456:06
312.45:436:07
412.45:426:07
512.55:406:08
612.55:396:09
712.55:386:10
812.65:366:10
912.65:356:11
1012.65:346:12
1112.75:326:13
1212.75:316:14
1312.75:306:14
1412.85:286:15
1512.85:276:16
1612.95:266:17
1712.95:246:17
1812.95:236:18
1913.05:226:19
2013.05:216:20
2113.05:196:21
2213.15:186:21
2313.15:176:22
2413.15:166:23
2513.25:146:24
2613.25:136:24
2713.25:126:25
2813.35:116:26
2913.35:106:27
3013.35:096:28

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 6.56 kWh/m².

For context, solar energy here swings from a low near 2.95 kWh/m² to a high of 8.05 kWh/m² in June across the year — April's 6.56 kWh/m² falls in the middle.

02468151015202530
Solar energy (kWh/m²)Level
16.0Bright
26.0Intense
36.1Intense
46.1Intense
56.1Intense
66.2Intense
76.2Intense
86.3Intense
96.3Intense
106.4Intense
116.4Intense
126.4Intense
136.5Intense
146.5Intense
156.6Intense
166.6Intense
176.6Intense
186.7Intense
196.7Intense
206.8Intense
216.8Intense
226.8Intense
236.8Intense
246.9Intense
256.9Intense
266.9Intense
277.0Intense
287.0Intense
297.0Intense
307.0Intense
Planning a trip in April

Is April a good time to visit Claremont?

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

7.8
Sightseeing
5th-best month of the year
4.7
Beach & pool
7th-best month of the year

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

What to pack for Claremont in April

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

In April, Claremont sees daytime highs around 70°F and nights near 51°F. Pack sun protection. About 4 days see rain.

sun protection

Sea temperature near Claremont in April

The nearest coast averages about 60°F in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 34 mi away) is warmest in August at about 69°F and coldest in February near 59°F.

It's comfortable for a long swim from Jul 13 to Sep 28 — about 2.6 months when the water holds above 68°F.

60°65°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingcomfortable to swim
Sea temperature (°F)Comfort
Jan59Cool
Feb59Cool
Mar59Cool
Apr60Cool
May63Cool
Jun65Cool
Jul68Refreshing
Aug69Refreshing
Sep69Refreshing
Oct67Cool
Nov64Cool
Dec60Cool

UV index in Claremont 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 Claremont peaks around July 12 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 highHighModerateJul 12UV 11Dec 16UV 3
UV index (midday)Level
Jan4Moderate
Feb5Moderate
Mar5Moderate
Apr8Very high
May8Very high
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Claremont 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 Claremont is worst in September — around 49 µg/m³ PM2.5 (poor), about 4.0× the cleanest month (May, 12 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateSep 1447 µg/m³May 1713 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb19Moderate
Mar19Moderate
Apr17Moderate
May12Moderate
Jun17Moderate
Jul19Moderate
Aug32Moderate
Sep49Poor
Oct21Moderate
Nov21Moderate
Dec18Moderate
Location & terrain

Where is Claremont?

Claremont sits at 34.1°N, 117.7°W, 1,168 ft above sea level, in United States. The nearest listed city is Montclair, 1.9 mi away.

Topography around Claremont

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

Within 2 miles, the terrain around Claremont has only modest variations in elevation — a maximum elevation change of 571 ft around an average of 1,178 ft above sea level; within 10 miles, extreme variations in elevation — a maximum elevation change of 7,917 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,948 ft.

The land around Claremont is covered by artificial surfaces (79%) within 2 miles, artificial surfaces (51%) and trees (20%) within 10 miles, and artificial surfaces (27%), shrubs (20%) and grassland (20%) within 50 miles.

2 miles
571 ft
10 miles
7,917 ft
50 miles
10,948 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Montclair 1.9 mi · La Verne 2.5 mi · Pomona 3.1 mi · Upland 4.3 mi · Ontario 4.3 mi · San Dimas 5.0 mi · Chino 6.2 mi · Diamond Bar 6.8 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 Claremont (34.0967°, -117.7198°, elevation 1,168 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).