United States · 1991–2020

Best time to visit
Eastmont.

September leads for comfortable weather in Eastmont: typically 23.7°C by day, 13.1°C at night, with 3 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.7°C

Typical low13.1°C

Rain in September3 mm

Comfort

September

September · August · July

96climate match

Beach

September

September · August · July

62climate match

Outdoors

May

May · April · October

97climate match

The weakest month is December, scoring 39 against September’s 96 — days reach only 14.5°C, 9° below 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

4314.4° / 5.6°

Feb

4815.9° / 6.9°

Mar

5817.6° / 8.2°

Apr

7118.8° / 9.5°

May

8120.2° / 11.2°

Jun

8922° / 12.5°

Jul

9122.1° / 13.6°

Aug

9322.5° / 13.9°

Sep

9623.7° / 13.1°

Oct

8622.1° / 11°

Nov

6317.8° / 7.7°

Dec

3914.5° / 5.9°

Monthly climate evidence for Eastmont — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 42 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	14.4°C	5.6°C	68 mm	7.5	11.6°C	9 h 49	43	Good coverage
February	15.9°C	6.9°C	78 mm	8	11.9°C	10 h 44	48	Good coverage
March	17.6°C	8.2°C	66 mm	7.8	12.0°C	11 h 50	58	Good coverage
April	18.8°C	9.5°C	38 mm	4.9	11.5°C	13 h 07	71	Good coverage
May	20.2°C	11.2°C	12 mm	2.1	11.7°C	14 h 11	81	Good coverage
June	22°C	12.5°C	4 mm	0.6	12.1°C	14 h 46	89	Good coverage
July	22.1°C	13.6°C	0 mm	0	13.4°C	14 h 32	91	Good coverage
August	22.5°C	13.9°C	0 mm	0	14.2°C	13 h 37	93	Good coverage
September	23.7°C	13.1°C	3 mm	0.5	14.4°C	12 h 23	96	Good coverage
October	22.1°C	11°C	24 mm	2.4	13.7°C	11 h 09	86	Good coverage
November	17.8°C	7.7°C	45 mm	5.4	12.9°C	10 h 05	63	Good coverage
December	14.5°C	5.9°C	98 mm	8.5	12.0°C	9 h 34	39	Good coverage

What has changed

Eastmont runs +1.6°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+2.2

Feb

+1.5

Mar

+1.5

Apr

+1.8

May

+1.4

Jun

+1.6

Jul

+1.0

Aug

+1.2

Sep

+1.2

Oct

+2.2

Nov

+1.8

Dec

+2.0

September daytime highs, 2011–2025. Last recorded: 23.7°C.

Records at OAKLAND INTL AP, 1948–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	28.3°C18 Jan 2021	-3.9°C5 Jan 1949	65 mm8 Jan 2018	226 mm1967 · driest 0 mm in 2015	63
February	28.9°C23 Feb 2021	-2.2°C13 Feb 1949	51 mm13 Feb 2000	225 mm1969 · driest 0 mm in 2022	63
March	30.0°C10 Mar 2004	0.0°C3 Mar 1953	44 mm8 Mar 1978	181 mm2006 · driest 1 mm in 1956	63
April	32.8°C20 Apr 2009	1.7°C27 Apr 1955	54 mm6 Apr 2018	117 mm1963 · driest 0 mm in 1949	63
May	36.7°C29 May 1975	3.9°C4 May 1950	36 mm18 May 1957	87 mm1957 · driest 0 mm in 2008	63
June	37.8°C14 Jun 2000	6.1°C7 Jun 1950	23 mm2 Jun 1967	48 mm2011 · driest 0 mm in 2020	63
July	37.2°C10 Jul 1959	8.9°C1 Jul 1955	20 mm8 Jul 1974	20 mm1974 · driest 0 mm in 1983	64
August	37.2°C24 Aug 2010	8.9°C30 Aug 1952	7 mm15 Aug 1976	19 mm1976 · driest 0 mm in 2021	62
September	40.0°C6 Sep 2020	5.0°C30 Sep 1950	81 mm18 Sep 1959	83 mm1959 · driest 0 mm in 2012	62
October	37.8°C6 Oct 2024	2.2°C20 Oct 1949	115 mm13 Oct 1962	218 mm1962 · driest 0 mm in 2020	62
November	29.4°C15 Nov 2008	-0.6°C30 Nov 2004	52 mm5 Nov 1973	189 mm1973 · driest 0 mm in 1959	62
December	26.1°C7 Dec 2020	-3.3°C11 Dec 1972	127 mm31 Dec 2022	292 mm2022 · driest 2 mm in 2017	62

Typical days per month at OAKLAND INTL AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	1	2
February	<1	0	<1	3
March	1	0	0	3
April	3	<1	0	1
May	4	1	0	<1
June	5	2	0	<1
July	4	<1	0	0
August	5	2	0	0
September	9	4	0	<1
October	7	2	0	<1
November	<1	0	<1	1
December	0	0	1	4

How often, not how much — every day in OAKLAND INTL AP’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%	26%	9%	33%	11.6–15.8°C
February	7%	27%	9%	33%	13.7–17.2°C
March	16%	24%	7%	28%	14.7–18.9°C
April	25%	15%	4%	15%	16.1–20.1°C
May	37%	6%	<1%	4%	17.8–21.3°C
June	62%	2%	<1%	<1%	19.3–22.9°C
July	76%	<1%	<1%	0%	20.4–23.3°C
August	81%	<1%	0%	<1%	20.9–23.8°C
September	82%	2%	<1%	<1%	21.1–25.4°C
October	61%	8%	3%	8%	19.6–23.2°C
November	19%	19%	6%	21%	15.6–18.8°C
December	2%	27%	11%	34%	12.0–15.4°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.

1948Each stripe is one year’s mean temperature against the 61-year average. Warmest: 2020. Coolest: 1955.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5345162
NOAA station: USW00023230 · OAKLAND INTL AP
Station distance: 7.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 37.77°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 42 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 OAKLAND INTL AP is what differs

San Leandro→Brookfield Village→Elmhurst→Lockwood Gardens→Mulford→Mulford Gardens→

Or put two places side by side: Eastmont vs San Leandro

Best time to visitEastmont.

September

September

May

The whole year,without the guesswork.

Eastmont runs +1.6°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Eastmont.

The whole year,
without the guesswork.

Eastmont runs +1.6°C
on the 1961–1990 baseline.

Nearby, measured,
and named.