United States · 1991–2020

Best time to visit
Lake Nacimiento.

April leads for comfortable weather in Lake Nacimiento: typically 23°C by day, 5.1°C at night, with 19 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortApril

Typical high23°C

Typical low5.1°C

Rain in April19 mm

Comfort

April

April · May · October

79climate match

Beach

June

June · July · August

65climate match

Outdoors

November

November · April · March

85climate match

The weakest month is January, scoring 40 against April’s 79 — nights drop to 1.2°C, and days reach only 16.7°C, 7° 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

4016.7° / 1.2°

Feb

4617.8° / 2.6°

Mar

6020.2° / 4.2°

Apr

7923° / 5.1°

May

7926.4° / 7.8°

Jun

7030.3° / 10°

Jul

6632.7° / 11.9°

Aug

6233.4° / 11.4°

Sep

6531.8° / 9.7°

Oct

7427° / 6.3°

Nov

6620.7° / 2.5°

Dec

4116.3° / 0.3°

Monthly climate evidence for Lake Nacimiento — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 25 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	16.7°C	1.2°C	87 mm	6.9	13.2°C	9 h 59	40	Strong coverage
February	17.8°C	2.6°C	82 mm	7.9	13.1°C	10 h 50	46	Strong coverage
March	20.2°C	4.2°C	72 mm	6.1	12.8°C	11 h 51	60	Strong coverage
April	23°C	5.1°C	19 mm	2.9	12.2°C	13 h 03	79	Strong coverage
May	26.4°C	7.8°C	9 mm	1.1	12.5°C	14 h 02	79	Strong coverage
June	30.3°C	10°C	1 mm	0.3	13.2°C	14 h 34	70	Strong coverage
July	32.7°C	11.9°C	3 mm	0.1	14.5°C	14 h 21	66	Strong coverage
August	33.4°C	11.4°C	1 mm	0.2	15.3°C	13 h 30	62	Strong coverage
September	31.8°C	9.7°C	2 mm	0.4	15.5°C	12 h 22	65	Strong coverage
October	27°C	6.3°C	18 mm	1.8	15.3°C	11 h 13	74	Strong coverage
November	20.7°C	2.5°C	30 mm	3.4	14.6°C	10 h 14	66	Strong coverage
December	16.3°C	0.3°C	64 mm	6.4	13.7°C	9 h 45	41	Strong coverage

What has changed

Lake Nacimiento runs +0.3°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

+0.8

Feb

0.0

Mar

+0.2

Apr

+0.5

May

-0.4

Jun

+0.3

Jul

-0.7

Aug

+0.1

Sep

+0.7

Oct

+0.6

Nov

+1.2

Dec

+0.5

April daytime highs, 2011–2025. Last recorded: 22.6°C.

Records at PASO ROBLES, 1894–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	28.3°C18 Jan 2014	-17.8°C6 Jan 1913	105 mm19 Jan 1969	375 mm1916 · driest 0 mm in 1948	127
February	29.4°C17 Feb 1930	-10.6°C1 Feb 1916	87 mm11 Feb 1938	324 mm1938 · driest 0 mm in 1953	127
March	35.6°C19 Mar 2026	-6.7°C2 Mar 1971	119 mm10 Mar 1995	313 mm1995 · driest 0 mm in 1997	127
April	37.8°C21 Apr 1931	-4.4°C2 Apr 1976	44 mm1 Apr 1958	133 mm1958 · driest 0 mm in 1897	125
May	43.3°C31 May 1910	-1.1°C9 May 1918	47 mm25 May 1931	61 mm1925 · driest 0 mm in 2001	126
June	46.1°C17 Jun 1917	-0.6°C15 Jun 1973	13 mm4 Jun 1934	24 mm1931 · driest 0 mm in 2022	126
July	46.1°C17 Jul 1925	1.1°C21 Jul 1898	58 mm19 Jul 2015	72 mm2015 · driest 0 mm in 1977	126
August	47.2°C13 Aug 1933	0.0°C11 Aug 1909	29 mm30 Aug 1896	30 mm1896 · driest 0 mm in 1954	125
September	46.1°C7 Sep 2020	-2.2°C26 Sep 1948	40 mm29 Sep 1976	74 mm1976 · driest 0 mm in 2001	125
October	42.2°C1 Oct 1980	-7.2°C30 Oct 1971	99 mm14 Oct 2009	130 mm2004 · driest 0 mm in 1988	126
November	35.0°C1 Nov 1966	-10.0°C17 Nov 1958	66 mm21 Nov 1900	182 mm1926 · driest 0 mm in 1929	123
December	30.6°C4 Dec 1958	-13.9°C22 Dec 1990	133 mm6 Dec 1966	219 mm1966 · driest 0 mm in 1901	126

Typical days per month at PASO ROBLES, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	14	3
February	3	0	9	3
March	6	<1	3	2
April	11	3	1	<1
May	19	9	0	<1
June	24	17	0	0
July	29	21	0	<1
August	29	24	0	0
September	27	20	0	<1
October	21	10	<1	<1
November	6	1	9	1
December	<1	0	18	2

How often, not how much — every day in PASO ROBLES’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	17%	22%	10%	27%	13.4–18.6°C
February	29%	23%	9%	28%	15.0–20.4°C
March	47%	20%	7%	20%	16.6–22.8°C
April	68%	11%	2%	8%	20.0–26.0°C
May	87%	4%	<1%	2%	23.9–28.9°C
June	97%	<1%	<1%	<1%	27.4–33.1°C
July	100%	<1%	<1%	0%	31.1–35.8°C
August	99%	<1%	<1%	0%	31.6–35.5°C
September	97%	2%	<1%	<1%	28.7–33.9°C
October	88%	6%	2%	3%	24.3–29.8°C
November	54%	12%	4%	10%	18.0–23.6°C
December	18%	19%	8%	20%	14.0–19.2°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.

1894Each stripe is one year’s mean temperature against the 114-year average. Warmest: 2014. Coolest: 1902.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5364615
NOAA station: USC00046730 · PASO ROBLES
Station distance: 20.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 35.73°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 25 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 PASO ROBLES is what differs

Atascadero→Paso Robles→Templeton→Creston→Adelaida→Asuncion→

Or put two places side by side: Lake Nacimiento vs Atascadero

Best time to visitLake Nacimiento.