United States · 1991–2020

Best time to visit
East Palo Alto.

July leads for comfortable weather in East Palo Alto: typically 26.3°C by day, 13.2°C at night, with 0 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high26.3°C

Typical low13.2°C

Rain in July0 mm

Comfort

July

July · August · June

89climate match

Beach

July

July · August · September

70climate match

Outdoors

April

April · May · October

92climate match

The weakest month is January, scoring 36 against July’s 89 — days reach only 14°C, 10° below the 24°C the score treats as ideal, and nights drop to 3.9°C.

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

3614° / 3.9°

Feb

4516° / 5.2°

Mar

6018.7° / 6.3°

Apr

7420.6° / 7.2°

May

8723.1° / 9.6°

Jun

8825.6° / 11.5°

Jul

8926.3° / 13.2°

Aug

8926.2° / 13°

Sep

8626.4° / 11.8°

Oct

8623.1° / 9.2°

Nov

6117.7° / 6°

Dec

3714.2° / 3.5°

Monthly climate evidence for East Palo Alto — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 23 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	14°C	3.9°C	82 mm	8.1	12.2°C	9 h 50	36	Strong coverage
February	16°C	5.2°C	83 mm	8.3	12.3°C	10 h 45	45	Strong coverage
March	18.7°C	6.3°C	57 mm	6.7	12.3°C	11 h 50	60	Strong coverage
April	20.6°C	7.2°C	28 mm	4.3	12.0°C	13 h 06	74	Strong coverage
May	23.1°C	9.6°C	11 mm	1.9	12.2°C	14 h 10	87	Strong coverage
June	25.6°C	11.5°C	3 mm	0.5	12.9°C	14 h 44	88	Strong coverage
July	26.3°C	13.2°C	0 mm	0	14.1°C	14 h 30	89	Good coverage
August	26.2°C	13°C	1 mm	0.1	14.9°C	13 h 36	89	Good coverage
September	26.4°C	11.8°C	1 mm	0.3	14.9°C	12 h 23	86	Strong coverage
October	23.1°C	9.2°C	17 mm	2	14.2°C	11 h 10	86	Strong coverage
November	17.7°C	6°C	38 mm	4.9	13.4°C	10 h 06	61	Strong coverage
December	14.2°C	3.5°C	78 mm	8	12.5°C	9 h 35	37	Strong coverage

Records at PALO ALTO, 1953–2017
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.9°C8 Jan 1962	-6.1°C13 Jan 1963	66 mm5 Jan 1982	201 mm1995 · driest 0 mm in 2015	62
February	28.9°C22 Feb 1981	-6.7°C12 Feb 2013	95 mm3 Feb 1998	316 mm1998 · driest 3 mm in 1967	62
March	29.4°C18 Mar 2004	-5.6°C31 Mar 2004	49 mm25 Mar 2011	217 mm1983 · driest 1 mm in 1955	62
April	36.7°C22 Apr 2009	-0.6°C25 Apr 1964	39 mm3 Apr 1958	116 mm1958 · driest 0 mm in 2008	63
May	37.8°C18 May 1997	0.6°C6 May 1977	26 mm7 May 1994	63 mm1998 · driest 0 mm in 1984	62
June	41.7°C15 Jun 1961	4.4°C3 Jun 1982	21 mm16 Jun 1995	27 mm2011 · driest 0 mm in 2014	62
July	40.6°C18 Jul 1988	5.0°C19 Jul 1983	8 mm31 Jul 1966	9 mm1980 · driest 0 mm in 1954	61
August	38.3°C30 Aug 1968	6.7°C4 Aug 1982	15 mm20 Aug 1997	21 mm1976 · driest 0 mm in 1969	60
September	40.6°C2 Sep 2017	2.8°C23 Sep 2010	45 mm19 Sep 1959	59 mm1959 · driest 0 mm in 1993	63
October	37.8°C2 Oct 1980	0.6°C5 Oct 2016	47 mm13 Oct 1962	94 mm1972 · driest 0 mm in 1955	62
November	31.7°C8 Nov 1955	-3.3°C25 Nov 1993	63 mm29 Nov 1970	160 mm1972 · driest 0 mm in 2009	65
December	23.9°C14 Dec 1953	-6.7°C23 Dec 1990	70 mm22 Dec 1955	268 mm1955 · driest 0 mm in 1989	65

Typical days per month at PALO ALTO, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	5	3
February	<1	0	2	3
March	2	0	<1	2
April	5	<1	<1	<1
May	8	2	0	<1
June	14	4	0	<1
July	18	4	0	0
August	18	3	0	0
September	17	6	0	0
October	9	2	0	<1
November	<1	0	1	1
December	0	0	5	3

How often, not how much — every day in PALO ALTO’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	3%	24%	9%	29%	12.5–15.5°C
February	13%	27%	9%	35%	14.4–18.2°C
March	30%	22%	6%	22%	16.0–20.2°C
April	50%	14%	2%	11%	18.4–22.7°C
May	77%	5%	<1%	3%	20.8–24.8°C
June	94%	2%	<1%	<1%	23.4–27.2°C
July	99%	<1%	0%	0%	24.4–27.3°C
August	99%	<1%	<1%	<1%	24.5–27.3°C
September	96%	2%	<1%	<1%	23.8–28.4°C
October	75%	7%	2%	5%	21.5–24.5°C
November	27%	16%	5%	16%	16.2–19.9°C
December	3%	24%	8%	28%	12.6–16.4°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.

1954Each stripe is one year’s mean temperature against the 50-year average. Warmest: 1997. Coolest: 1994.2017

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5345032
NOAA station: USC00046646 · PALO ALTO
Station distance: 2.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 23 usable years
Daylight: Calculated from latitude 37.47°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 23 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
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 PALO ALTO is what differs

Palo Alto→Menlo Park→Stanford→Los Altos Hills→Alta Mesa→Belle Haven→

Or put two places side by side: East Palo Alto vs Palo Alto

Best time to visitEast Palo Alto.

July

July

April

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
East Palo Alto.

The whole year,
without the guesswork.

Nearby, measured,
and named.