United States · 1991–2020

Best time to visit
Rubidoux.

April leads for comfortable weather in Rubidoux: typically 24.2°C by day, 9.4°C at night, with 14 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortApril

Typical high24.2°C

Typical low9.4°C

Rain in April14 mm

Comfort

April

April · November · May

89climate match

Beach

June

June · October · July

76climate match

Outdoors

December

December · March · April

92climate match

The weakest month is August, scoring 59 against April’s 89 — days average 35.5°C, 12° above the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

6420° / 6.2°

Feb

6420.1° / 7°

Mar

7922.1° / 7.9°

Apr

8924.2° / 9.4°

May

8527.1° / 12.3°

Jun

7730.4° / 14°

Jul

6334.3° / 16.7°

Aug

5935.5° / 16.9°

Sep

6833.5° / 15.3°

Oct

7928.6° / 11.9°

Nov

8724° / 8.1°

Dec

6920° / 5.6°

Monthly climate evidence for Rubidoux — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	20°C	6.2°C	64 mm	5.7	10 h 07	64	Good coverage
February	20.1°C	7°C	74 mm	6.3	10 h 55	64	Good coverage
March	22.1°C	7.9°C	42 mm	4.4	11 h 52	79	Good coverage
April	24.2°C	9.4°C	14 mm	2.3	12 h 59	89	Good coverage
May	27.1°C	12.3°C	6 mm	1	13 h 54	85	Good coverage
June	30.4°C	14°C	3 mm	0.3	14 h 24	77	Good coverage
July	34.3°C	16.7°C	1 mm	0.4	14 h 13	63	Good coverage
August	35.5°C	16.9°C	1 mm	0.1	13 h 25	59	Good coverage
September	33.5°C	15.3°C	2 mm	0.4	12 h 21	68	Good coverage
October	28.6°C	11.9°C	11 mm	1.5	11 h 16	79	Good coverage
November	24°C	8.1°C	15 mm	1.8	10 h 21	87	Good coverage
December	20°C	5.6°C	30 mm	3.7	9 h 54	69	Good coverage

Records at RIVERSIDE CITRUS EXP, 1956–2009
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	36.1°C31 Jan 2003	-4.4°C13 Jan 1963	80 mm4 Jan 1995	237 mm1993 · driest 0 mm in 1972	53
February	33.3°C7 Feb 1963	-2.8°C28 Feb 1962	59 mm24 Feb 1969	241 mm1998 · driest 0 mm in 1961	54
March	36.7°C29 Mar 2004	-1.7°C1 Mar 1962	52 mm17 Mar 1982	146 mm1983 · driest 0 mm in 1959	53
April	40.0°C6 Apr 1989	0.6°C2 Apr 1956	35 mm20 Apr 1983	118 mm1965 · driest 0 mm in 1979	54
May	42.2°C29 May 1984	3.3°C8 May 1965	18 mm9 May 1977	42 mm1977 · driest 0 mm in 2009	54
June	44.4°C16 Jun 1961	6.7°C27 Jun 1965	23 mm5 Jun 1993	23 mm1993 · driest 0 mm in 2008	53
July	47.2°C22 Jul 2006	9.4°C13 Jul 1966	8 mm29 Jul 1968	17 mm1968 · driest 0 mm in 2005	54
August	44.4°C29 Aug 1998	9.4°C24 Aug 1978	30 mm17 Aug 1977	59 mm1977 · driest 0 mm in 1962	54
September	45.0°C14 Sep 1971	5.6°C21 Sep 1965	47 mm11 Sep 1976	101 mm1963 · driest 0 mm in 1961	54
October	42.2°C1 Oct 1980	0.0°C30 Oct 1971	50 mm20 Oct 2004	112 mm2004 · driest 0 mm in 1962	53
November	36.7°C7 Nov 2006	-3.3°C17 Nov 1958	63 mm23 Nov 1965	166 mm1965 · driest 0 mm in 1995	53
December	33.9°C4 Dec 1958	-5.6°C23 Dec 1990	59 mm6 Dec 1997	140 mm1966 · driest 0 mm in 1989	53

Typical days per month at RIVERSIDE CITRUS EXP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	7	<1	<1	2
February	6	2	<1	3
March	10	3	0	2
April	13	5	0	<1
May	21	9	0	<1
June	27	17	0	<1
July	31	28	0	0
August	31	30	0	<1
September	29	24	0	<1
October	23	13	0	<1
November	13	4	<1	<1
December	5	<1	<1	<1

How often, not how much — every day in RIVERSIDE CITRUS EXP’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	43%	17%	5%	18%	16.4–22.3°C
February	47%	18%	7%	21%	17.6–23.4°C
March	55%	15%	5%	13%	18.5–24.4°C
April	74%	9%	2%	6%	21.3–26.8°C
May	89%	4%	<1%	1%	23.2–29.0°C
June	97%	<1%	<1%	0%	27.3–33.0°C
July	99%	1%	0%	<1%	32.8–36.1°C
August	99%	1%	<1%	<1%	32.9–36.5°C
September	98%	3%	<1%	1%	29.5–35.0°C
October	93%	5%	<1%	2%	25.4–30.9°C
November	70%	8%	2%	5%	20.8–26.1°C
December	48%	12%	3%	10%	16.8–22.4°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1956Each stripe is one year’s mean temperature against the 50-year average. Warmest: 2003. Coolest: 1982.2008

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5389213
NOAA station: USC00047473 · RIVERSIDE CITRUS EXP
Station distance: 5.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 18 usable years
Daylight: Calculated from latitude 34.00°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from RIVERSIDE CITRUS EXP is what differs

Bloomington→Grand Terrace→Highgrove→March Air Force Base→Alessandro→Arnold Heights→

Or put two places side by side: Rubidoux vs Bloomington

Best time to visitRubidoux.