United States · 1991–2020

Best time to visit
Richvale.

October leads for comfortable weather in Richvale: typically 25.4°C by day, 10.8°C at night, with 32 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high25.4°C

Typical low10.8°C

Rain in October32 mm

Comfort

October

October · May · April

88climate match

Beach

June

June · September · August

77climate match

Outdoors

April

April · October · November

87climate match

The weakest month is December, scoring 28 against October’s 88 — days reach only 13.1°C, 11° 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

3113° / 4.1°

Feb

4015.8° / 5.4°

Mar

5818.8° / 7.2°

Apr

8022.4° / 9.1°

May

8427.4° / 12.7°

Jun

7132.2° / 16.3°

Jul

5635.5° / 18.4°

Aug

6134.4° / 17.5°

Sep

7631.3° / 15.2°

Oct

8825.4° / 10.8°

Nov

5717.4° / 6.7°

Dec

2813.1° / 4°

Monthly climate evidence for Richvale — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	13°C	4.1°C	94 mm	8.3	9 h 40	31	Good coverage
February	15.8°C	5.4°C	111 mm	8.1	10 h 39	40	Good coverage
March	18.8°C	7.2°C	82 mm	8.1	11 h 49	58	Good coverage
April	22.4°C	9.1°C	46 mm	5.1	13 h 11	80	Good coverage
May	27.4°C	12.7°C	24 mm	3.2	14 h 19	84	Good coverage
June	32.2°C	16.3°C	6 mm	0.9	14 h 56	71	Good coverage
July	35.5°C	18.4°C	1 mm	0.1	14 h 42	56	Good coverage
August	34.4°C	17.5°C	1 mm	0.2	13 h 43	61	Good coverage
September	31.3°C	15.2°C	5 mm	0.7	12 h 24	76	Good coverage
October	25.4°C	10.8°C	32 mm	3.1	11 h 05	88	Good coverage
November	17.4°C	6.7°C	65 mm	5.9	9 h 57	57	Good coverage
December	13.1°C	4°C	113 mm	8.9	9 h 24	28	Good coverage

Records at OROVILLE MUNI AP, 1998–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	28.3°C15 Jan 2009	-5.5°C13 Jan 2013	66 mm16 Jan 2019	204 mm2023 · driest 0 mm in 2007	28
February	30.0°C9 Feb 2022	-3.2°C20 Feb 2018	74 mm27 Feb 2006	300 mm2019 · driest 0 mm in 2022	28
March	30.6°C19 Mar 2026	-0.6°C8 Mar 2002	47 mm5 Mar 2016	214 mm2006 · driest 4 mm in 2008	28
April	35.6°C21 Apr 2009	0.0°C12 Apr 2022	61 mm6 Apr 2018	155 mm2026 · driest 1 mm in 2025	28
May	40.0°C28 May 2020	3.9°C22 May 2010	39 mm4 May 2024	79 mm2019 · driest 0 mm in 2021	28
June	43.9°C18 Jun 2021	8.3°C7 Jun 2005	25 mm28 Jun 2011	41 mm2011 · driest 0 mm in 2003	29
July	45.6°C6 Jul 2024	12.2°C17 Jul 2001	11 mm18 Jul 2007	11 mm2007 · driest 0 mm in 2013	29
August	42.8°C28 Aug 2017	11.7°C27 Aug 2012	15 mm2 Aug 2003	18 mm2003 · driest 0 mm in 2016	28
September	43.9°C5 Sep 2022	6.1°C29 Sep 2007	31 mm19 Sep 2022	40 mm2022 · driest 0 mm in 2024	28
October	38.3°C6 Oct 2024	1.1°C31 Oct 2019	116 mm24 Oct 2021	169 mm2021 · driest 0 mm in 2019	28
November	29.4°C3 Nov 2018	-2.7°C29 Nov 2015	90 mm21 Nov 2024	238 mm2024 · driest 17 mm in 2000	28
December	28.9°C5 Dec 2019	-5.5°C9 Dec 2009	94 mm11 Dec 2014	261 mm2005 · driest 1 mm in 2017	28

Typical days per month at OROVILLE MUNI AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	4	4
February	<1	0	2	4
March	4	0	<1	3
April	9	3	0	2
May	22	10	0	<1
June	27	21	0	<1
July	31	29	0	0
August	30	28	0	0
September	28	21	0	<1
October	18	5	0	1
November	2	0	<1	3
December	<1	0	4	4

How often, not how much — every day in OROVILLE MUNI 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	4%	26%	12%	31%	11.2–15.7°C
February	16%	28%	13%	41%	13.8–18.8°C
March	40%	26%	10%	29%	15.8–22.6°C
April	66%	16%	5%	15%	20.3–24.7°C
May	88%	9%	2%	7%	25.3–29.5°C
June	97%	3%	<1%	<1%	30.5–34.4°C
July	100%	<1%	<1%	0%	33.8–37.8°C
August	99%	<1%	<1%	0%	33.2–36.0°C
September	97%	3%	<1%	1%	29.7–33.4°C
October	83%	10%	3%	9%	23.1–28.3°C
November	26%	20%	8%	22%	15.6–19.6°C
December	2%	30%	13%	40%	11.4–14.9°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.

1999Each stripe is one year’s mean temperature against the 27-year average. Warmest: 2024. Coolest: 2011.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5387459
NOAA station: USW00093210 · OROVILLE MUNI AP
Station distance: 10.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 39.49°, 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 OROVILLE MUNI AP is what differs

Gridley→Biggs→Honcut→Shippee→Blavo→Craig→

Or put two places side by side: Richvale vs Gridley

Best time to visitRichvale.