United States · 1991–2020

Best time to visit
Hillsboro.

October leads for comfortable weather in Hillsboro: typically 25.5°C by day, 10.2°C at night, with 93 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high25.5°C

Typical low10.2°C

Rain in October93 mm

Comfort

October

October · May · April

76climate match

Beach

May

May · September · June

69climate match

Outdoors

November

November · October · March

77climate match

The weakest month is January, scoring 25 against October’s 76 — days reach only 14.4°C, 10° below the 24°C the score treats as ideal, and nights drop to 1.3°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

2514.4° / 1.3°

Feb

3616.9° / 3°

Mar

5821.4° / 6.4°

Apr

7224.9° / 10.3°

May

7528.6° / 14.8°

Jun

5231.9° / 18.7°

Jul

4033° / 20.4°

Aug

4533° / 20°

Sep

6430.4° / 16.6°

Oct

7625.5° / 10.2°

Nov

5719.9° / 4.6°

Dec

3015.5° / 2.1°

Monthly climate evidence for Hillsboro — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	14.4°C	1.3°C	133 mm	7.7	10 h 14	25	Good coverage
February	16.9°C	3°C	141 mm	7.2	10 h 59	36	Good coverage
March	21.4°C	6.4°C	139 mm	7	11 h 53	58	Good coverage
April	24.9°C	10.3°C	135 mm	6	12 h 56	72	Good coverage
May	28.6°C	14.8°C	88 mm	5.6	13 h 48	75	Good coverage
June	31.9°C	18.7°C	119 mm	6.7	14 h 16	52	Good coverage
July	33°C	20.4°C	149 mm	8.8	14 h 05	40	Good coverage
August	33°C	20°C	128 mm	7	13 h 20	45	Good coverage
September	30.4°C	16.6°C	105 mm	5.4	12 h 20	64	Good coverage
October	25.5°C	10.2°C	93 mm	5.3	11 h 19	76	Good coverage
November	19.9°C	4.6°C	95 mm	6	10 h 27	57	Good coverage
December	15.5°C	2.1°C	136 mm	7.7	10 h 02	30	Good coverage

Records at FOREST, 1930–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	31.1°C22 Jan 1937	-20.6°C27 Jan 1940	186 mm6 Jan 1950	338 mm1979 · driest 20 mm in 1986	79
February	30.0°C24 Feb 2012	-17.2°C3 Feb 1951	132 mm14 Feb 1950	319 mm1987 · driest 24 mm in 1958	80
March	32.2°C26 Mar 1936	-13.9°C2 Mar 1980	138 mm22 Mar 2012	378 mm1980 · driest 6 mm in 2007	80
April	33.9°C21 Apr 1987	-3.3°C4 Apr 1987	145 mm13 Apr 1974	404 mm1991 · driest 0 mm in 2009	83
May	36.7°C13 May 1934	-1.1°C4 May 1971	114 mm2 May 1970	290 mm1983 · driest 0 mm in 2005	82
June	40.6°C20 Jun 1936	4.4°C8 Jun 1998	197 mm25 Jun 1993	352 mm1961 · driest 6 mm in 1988	81
July	41.7°C12 Jul 1930	11.1°C2 Jul 1998	127 mm5 Jul 2003	350 mm1950 · driest 8 mm in 2006	82
August	40.0°C14 Aug 2007	8.9°C29 Aug 1952	173 mm29 Aug 2005	311 mm1960 · driest 11 mm in 1989	82
September	38.9°C15 Sep 1980	2.2°C29 Sep 1967	298 mm5 Sep 2011	377 mm2011 · driest 2 mm in 2010	82
October	35.6°C6 Oct 1954	-6.7°C22 Oct 1952	148 mm17 Oct 1975	259 mm1985 · driest 0 mm in 1952	82
November	32.8°C4 Nov 1935	-11.1°C18 Nov 1997	144 mm15 Nov 1980	369 mm1948 · driest 2 mm in 1949	80
December	31.7°C25 Dec 2008	-17.8°C23 Dec 1989	143 mm24 Dec 1974	311 mm1982 · driest 28 mm in 1980	81

Typical days per month at FOREST, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	<1	0	14	4
February	2	<1	11	5
March	9	<1	6	4
April	18	1	1	4
May	27	13	<1	3
June	29	25	0	4
July	30	28	0	5
August	30	28	0	4
September	27	19	0	3
October	19	4	1	3
November	5	<1	8	3
December	<1	<1	14	4

How often, not how much — every day in FOREST’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	16%	28%	15%	30%	10.7–17.9°C
February	26%	27%	15%	30%	12.7–19.7°C
March	46%	26%	14%	27%	17.0–23.6°C
April	70%	22%	13%	20%	23.0–26.4°C
May	77%	22%	11%	23%	27.0–30.1°C
June	78%	23%	11%	23%	30.4–33.8°C
July	69%	31%	15%	38%	31.6–34.5°C
August	76%	24%	11%	26%	31.4–35.0°C
September	80%	20%	9%	17%	28.7–32.3°C
October	78%	15%	8%	11%	23.9–27.8°C
November	44%	21%	11%	17%	17.3–22.6°C
December	20%	26%	14%	30%	12.5–18.4°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.

1930Each stripe is one year’s mean temperature against the 64-year average. Warmest: 1933. Coolest: 1960.2012

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4429861
NOAA station: USC00223107 · FOREST
Station distance: 13.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 32.46°, 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 FOREST is what differs

Forest→Morton→Conehatta→Lake→Sebastopol→Ball Hill→

Or put two places side by side: Hillsboro vs Forest

Best time to visitHillsboro.

October

May

November

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Hillsboro.

The whole year,
without the guesswork.

Nearby, measured,
and named.