Yucaipa weather in May

In May, Yucaipa sees average daytime highs of 73°F and overnight lows near 51°F, with 0.5 in of rain across 2.9 wet days and about 13.7 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 71°F in the first days to 76°F by the end. The sky is clear or mostly clear about 68% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of May to 14 h 06 min by month's end. Set against the rest of the year, May is Yucaipa's 6th-clearest and 4th-windiest month. For the whole year in context, see Yucaipa's year-round climate.

Daytime high: 73°; 6th warmest
Overnight low: 51°; 7th coldest
Rainfall: 0.5 in; 2.9 wet days
Daylight: 13 h 48 min; 4:51 AM – 6:37 PM
Cloud cover: 29%; 6th clearest
Wind: 4 mph; 4th windiest
Solar energy: 7.73 kWh/m²
Travel score: 8.5; out of 10

Yucaipa is city in San Bernardino County, California.

Density: 725/km²; people per km²
Founded: 1989

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

← April Yucaipa year-round climate June →Best places to visit in May

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 71°F in the first days to 76°F by the end.

A typical May day in Yucaipa reaches about 73°F in the afternoon and slips back to 51°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 60°F and 84°F. Set against its neighbours, May runs about 6°F warmer than April and about 8°F cooler than June.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	70	71	71	71	71	71	71	71	72	72	72	72	72	72	72	73	73	73	73	73	73	73	74	74	74	74	75	75	76	76	76
Avg low (°F)	49	49	49	49	49	50	50	50	50	50	50	51	51	51	51	51	51	51	51	51	52	52	52	52	52	53	53	53	53	54	54

	Avg high (°F)	Avg low (°F)
1	70	49
2	71	49
3	71	49
4	71	49
5	71	49
6	71	50
7	71	50
8	71	50
9	72	50
10	72	50
11	72	50
12	72	51
13	72	51
14	72	51
15	72	51
16	73	51
17	73	51
18	73	51
19	73	51
20	73	51
21	73	52
22	73	52
23	74	52
24	74	52
25	74	52
26	74	53
27	75	53
28	75	53
29	76	53
30	76	54
31	76	54

Yucaipa weather by month

How May compares with the rest of the year at a glance. May is the 6th-warmest and 9th-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	57° / 39°	2.6	6.1	1.1	10	4.7
Feb	58° / 40°	3.1	7.3	1.4	10.7	4.7
Mar	62° / 42°	1.9	6.3	1	11.7	5.9
Apr	66° / 45°	1.0	4.1	0.4	12.8	7.4
May	73° / 51°	0.5	2.9	0	13.7	8.5
Jun	81° / 58°	0.1	0.9	0	14.2	8.4
Jul	87° / 64°	0.5	2.8	0	14	6.2
Aug	87° / 65°	0.4	3	0	13.3	6.0
Sep	83° / 61°	0.3	1.7	0	12.2	7.7
Oct	74° / 52°	0.6	2.4	0	11.1	8.7
Nov	64° / 44°	0.9	3.3	0.2	10.2	7.2
Dec	57° / 39°	2.1	5.1	0.7	9.8	4.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 68% 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 18%. Skies tend to open up as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	78	78	78	78	77	77	77	77	77	78	78	79	79	80	81	81	82	82	82	84	84	84	84	86	86	86	86	87	87	87	87
Cloudier (%)	22	22	22	22	23	23	23	23	23	22	22	21	21	20	19	19	18	18	18	16	16	16	16	14	14	14	14	13	13	13	13

	Clearer (%)	Cloudier (%)
1	78	22
2	78	22
3	78	22
4	78	22
5	77	23
6	77	23
7	77	23
8	77	23
9	77	23
10	78	22
11	78	22
12	79	21
13	79	21
14	80	20
15	81	19
16	81	19
17	82	18
18	82	18
19	82	18
20	84	16
21	84	16
22	84	16
23	84	16
24	86	14
25	86	14
26	86	14
27	86	14
28	87	13
29	87	13
30	87	13
31	87	13

Chance of precipitation in May

Any precipitation

Yucaipa gets around 0.5 in of rain over 2.9 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 9% and peaks near 11% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	11	11	11	11	11	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	9	9	9	8	8	8	7	7	6	5	5

	Rain chance (%)
1	11
2	11
3	11
4	11
5	11
6	10
7	10
8	10
9	10
10	10
11	10
12	10
13	10
14	10
15	10
16	10
17	10
18	10
19	10
20	10
21	9
22	9
23	9
24	8
25	8
26	8
27	7
28	7
29	6
30	5
31	5

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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	99	99	99	99	99	99	99	99	99	98	98
Comfortable (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	2	2

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	98	2
31	98	2

Wind in May

Winds average 4 mph in May.

Across May, 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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (mph)	Feels
1	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm
31	4	calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 18 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 48 minutes over May. Sunrise moves from 5:05 AM to 4:43 AM, and sunset from 6:26 PM to 6:48 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	13.3	13.4	13.4	13.4	13.5	13.5	13.5	13.5	13.6	13.6	13.6	13.7	13.7	13.7	13.7	13.8	13.8	13.8	13.8	13.9	13.9	13.9	13.9	13.9	14.0	14.0	14.0	14.0	14.0	14.1	14.1
Sunrise (AM)	5:05	5:04	5:03	5:02	5:01	5:00	4:59	4:58	4:57	4:56	4:55	4:55	4:54	4:53	4:52	4:51	4:51	4:50	4:49	4:49	4:48	4:47	4:47	4:46	4:46	4:45	4:45	4:44	4:44	4:44	4:43
Sunset (PM)	6:26	6:26	6:27	6:28	6:29	6:30	6:30	6:31	6:32	6:33	6:33	6:34	6:35	6:36	6:37	6:37	6:38	6:39	6:40	6:40	6:41	6:42	6:43	6:43	6:44	6:45	6:45	6:46	6:47	6:47	6:48

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.3	5:05	6:26
2	13.4	5:04	6:26
3	13.4	5:03	6:27
4	13.4	5:02	6:28
5	13.5	5:01	6:29
6	13.5	5:00	6:30
7	13.5	4:59	6:30
8	13.5	4:58	6:31
9	13.6	4:57	6:32
10	13.6	4:56	6:33
11	13.6	4:55	6:33
12	13.7	4:55	6:34
13	13.7	4:54	6:35
14	13.7	4:53	6:36
15	13.7	4:52	6:37
16	13.8	4:51	6:37
17	13.8	4:51	6:38
18	13.8	4:50	6:39
19	13.8	4:49	6:40
20	13.9	4:49	6:40
21	13.9	4:48	6:41
22	13.9	4:47	6:42
23	13.9	4:47	6:43
24	13.9	4:46	6:43
25	14.0	4:46	6:44
26	14.0	4:45	6:45
27	14.0	4:45	6:45
28	14.0	4:44	6:46
29	14.0	4:44	6:47
30	14.1	4:44	6:47
31	14.1	4:43	6:48

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.73 kWh/m².

For context, solar energy here swings from a low near 3.07 kWh/m² to a high of 8.41 kWh/m² in June across the year — May's 7.73 kWh/m² sits near the top of that range.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	7.5	7.5	7.5	7.5	7.5	7.5	7.5	7.6	7.6	7.6	7.6	7.6	7.7	7.7	7.7	7.7	7.7	7.8	7.8	7.8	7.8	7.8	7.9	7.9	7.9	8.0	8.0	8.0	8.1	8.1	8.1
Level	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	7.5	Intense
2	7.5	Intense
3	7.5	Intense
4	7.5	Intense
5	7.5	Intense
6	7.5	Intense
7	7.5	Intense
8	7.6	Intense
9	7.6	Intense
10	7.6	Intense
11	7.6	Intense
12	7.6	Intense
13	7.7	Intense
14	7.7	Intense
15	7.7	Intense
16	7.7	Intense
17	7.7	Intense
18	7.8	Intense
19	7.8	Intense
20	7.8	Intense
21	7.8	Intense
22	7.8	Intense
23	7.9	Intense
24	7.9	Intense
25	7.9	Intense
26	8.0	Intense
27	8.0	Intense
28	8.0	Intense
29	8.1	Intense
30	8.1	Intense
31	8.1	Intense

Planning a trip in May

Is May a good time to visit Yucaipa?

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

8.5

Sightseeing

2nd-best month of the year

6.3

Beach & pool

6th-best month of the year

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

What to pack for Yucaipa in May

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

In May, Yucaipa sees daytime highs around 73°F and nights near 51°F. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

UV index in Yucaipa 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 Yucaipa 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	4	5	5	8	8	11	11	11	8	6	4	3
Level	Moderate	Moderate	High	Very high	Very high	Extreme	Extreme	Extreme	Very high	High	Moderate	Moderate

	UV index (midday)	Level
Jan	4	Moderate
Feb	5	Moderate
Mar	5	High
Apr	8	Very high
May	8	Very high
Jun	11	Extreme
Jul	11	Extreme
Aug	11	Extreme
Sep	8	Very high
Oct	6	High
Nov	4	Moderate
Dec	3	Moderate

Air quality in Yucaipa 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 Yucaipa is worst in September — around 40 µg/m³ PM2.5 (poor), about 5.4× the cleanest month (December, 7 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	8	9	11	10	8	19	12	20	40	10	8	7
Level	Good	Good	Good	Good	Good	Moderate	Moderate	Moderate	Poor	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	8	Good
Feb	9	Good
Mar	11	Good
Apr	10	Good
May	8	Good
Jun	19	Moderate
Jul	12	Moderate
Aug	20	Moderate
Sep	40	Poor
Oct	10	Good
Nov	8	Good
Dec	7	Good

Location & terrain

Where is Yucaipa?

Yucaipa sits at 34.0°N, 117.0°W, 2,618 ft above sea level, in United States. The nearest listed city is Beaumont, 8.1 mi away.

Topography around Yucaipa

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

Within 2 miles, the terrain around Yucaipa has significant variations in elevation — a maximum elevation change of 1,558 ft around an average of 2,700 ft above sea level; within 10 miles, extreme variations in elevation — a maximum elevation change of 9,577 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 11,404 ft.

The land around Yucaipa is covered by artificial surfaces (49%) within 2 miles, shrubs (39%) and grassland (26%) within 10 miles, and shrubs (30%) and bare terrain (21%) within 50 miles.

2 miles

1,558 ft

artificial surfaces 49%

10 miles

9,577 ft

shrubs 39%

50 miles

11,404 ft

shrubs 30%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← April Yucaipa year-round climate June →Best places to visit in May

May weather nearby: Beaumont 8.1 mi · Redlands 8.1 mi · Highland 12 mi · Banning 12 mi · Loma Linda 12 mi · Moreno Valley 12 mi · San Bernardino 15 mi · Colton 16 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

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 Yucaipa (34.0336°, -117.0431°, elevation 2,618 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).

	Avg high (°F)	Avg low (°F)
1	70	49
2	71	49
3	71	49
4	71	49
5	71	49
6	71	50
7	71	50
8	71	50
9	72	50
10	72	50
11	72	50
12	72	51
13	72	51
14	72	51
15	72	51
16	73	51
17	73	51
18	73	51
19	73	51
20	73	51
21	73	52
22	73	52
23	74	52
24	74	52
25	74	52
26	74	53
27	75	53
28	75	53
29	76	53
30	76	54
31	76	54

	Clearer (%)	Cloudier (%)
1	78	22
2	78	22
3	78	22
4	78	22
5	77	23
6	77	23
7	77	23
8	77	23
9	77	23
10	78	22
11	78	22
12	79	21
13	79	21
14	80	20
15	81	19
16	81	19
17	82	18
18	82	18
19	82	18
20	84	16
21	84	16
22	84	16
23	84	16
24	86	14
25	86	14
26	86	14
27	86	14
28	87	13
29	87	13
30	87	13
31	87	13

	Rain chance (%)
1	11
2	11
3	11
4	11
5	11
6	10
7	10
8	10
9	10
10	10
11	10
12	10
13	10
14	10
15	10
16	10
17	10
18	10
19	10
20	10
21	9
22	9
23	9
24	8
25	8
26	8
27	7
28	7
29	6
30	5
31	5

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	98	2
31	98	2

	Avg high (°F)	Avg low (°F)
1	70	49
2	71	49
3	71	49
4	71	49
5	71	49
6	71	50
7	71	50
8	71	50
9	72	50
10	72	50
11	72	50
12	72	51
13	72	51
14	72	51
15	72	51
16	73	51
17	73	51
18	73	51
19	73	51
20	73	51
21	73	52
22	73	52
23	74	52
24	74	52
25	74	52
26	74	53
27	75	53
28	75	53
29	76	53
30	76	54
31	76	54

	Clearer (%)	Cloudier (%)
1	78	22
2	78	22
3	78	22
4	78	22
5	77	23
6	77	23
7	77	23
8	77	23
9	77	23
10	78	22
11	78	22
12	79	21
13	79	21
14	80	20
15	81	19
16	81	19
17	82	18
18	82	18
19	82	18
20	84	16
21	84	16
22	84	16
23	84	16
24	86	14
25	86	14
26	86	14
27	86	14
28	87	13
29	87	13
30	87	13
31	87	13

	Rain chance (%)
1	11
2	11
3	11
4	11
5	11
6	10
7	10
8	10
9	10
10	10
11	10
12	10
13	10
14	10
15	10
16	10
17	10
18	10
19	10
20	10
21	9
22	9
23	9
24	8
25	8
26	8
27	7
28	7
29	6
30	5
31	5

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	98	2
31	98	2

	Avg high (°F)	Avg low (°F)
1	70	49
2	71	49
3	71	49
4	71	49
5	71	49
6	71	50
7	71	50
8	71	50
9	72	50
10	72	50
11	72	50
12	72	51
13	72	51
14	72	51
15	72	51
16	73	51
17	73	51
18	73	51
19	73	51
20	73	51
21	73	52
22	73	52
23	74	52
24	74	52
25	74	52
26	74	53
27	75	53
28	75	53
29	76	53
30	76	54
31	76	54

	Clearer (%)	Cloudier (%)
1	78	22
2	78	22
3	78	22
4	78	22
5	77	23
6	77	23
7	77	23
8	77	23
9	77	23
10	78	22
11	78	22
12	79	21
13	79	21
14	80	20
15	81	19
16	81	19
17	82	18
18	82	18
19	82	18
20	84	16
21	84	16
22	84	16
23	84	16
24	86	14
25	86	14
26	86	14
27	86	14
28	87	13
29	87	13
30	87	13
31	87	13

	Rain chance (%)
1	11
2	11
3	11
4	11
5	11
6	10
7	10
8	10
9	10
10	10
11	10
12	10
13	10
14	10
15	10
16	10
17	10
18	10
19	10
20	10
21	9
22	9
23	9
24	8
25	8
26	8
27	7
28	7
29	6
30	5
31	5

	Dry (%)	Comfortable (%)
1	100	0
2	100	0
3	100	0
4	100	0
5	100	0
6	100	0
7	100	0
8	100	0
9	100	0
10	100	0
11	100	0
12	100	0
13	100	0
14	100	0
15	100	0
16	100	0
17	100	0
18	100	0
19	100	0
20	100	0
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	98	2
31	98	2