United States · 1991–2020

Best time to visit
Bryn Mawr.

April leads for comfortable weather in Bryn Mawr: typically 24°C by day, 9.1°C at night, with 23 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortApril

Typical high24°C

Typical low9.1°C

Rain in April23 mm

Comfort

April

April · May · November

89climate match

Beach

June

June · July · September

74climate match

Outdoors

March

March · April · November

86climate match

The weakest month is August, scoring 57 against April’s 89 — days average 35.6°C, 12° above 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

6119.5° / 5.4°

Feb

6119.5° / 6.2°

Mar

7721.9° / 7.8°

Apr

8924° / 9.1°

May

8427.1° / 11.9°

Jun

7531° / 14°

Jul

6134.6° / 17.1°

Aug

5735.6° / 17.5°

Sep

6733.5° / 15.9°

Oct

8227.9° / 12°

Nov

8423.2° / 7.6°

Dec

6218.9° / 5°

Monthly climate evidence for Bryn Mawr — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	19.5°C	5.4°C	70 mm	5.6	10 h 07	61	Strong coverage
February	19.5°C	6.2°C	76 mm	6	10 h 54	61	Strong coverage
March	21.9°C	7.8°C	49 mm	4.7	11 h 52	77	Good coverage
April	24°C	9.1°C	23 mm	3	12 h 59	89	Strong coverage
May	27.1°C	11.9°C	9 mm	1.6	13 h 55	84	Strong coverage
June	31°C	14°C	2 mm	0.3	14 h 24	75	Good coverage
July	34.6°C	17.1°C	3 mm	0.6	14 h 13	61	Good coverage
August	35.6°C	17.5°C	2 mm	0.4	13 h 25	57	Good coverage
September	33.5°C	15.9°C	3 mm	0.4	12 h 21	67	Good coverage
October	27.9°C	12°C	13 mm	1.9	11 h 16	82	Good coverage
November	23.2°C	7.6°C	22 mm	2.6	10 h 21	84	Good coverage
December	18.9°C	5°C	51 mm	4.5	9 h 54	62	Good coverage

Records at REDLANDS, 1898–2015
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	33.9°C31 Jan 2003	-7.8°C7 Jan 1913	87 mm17 Jan 1916	297 mm1993 · driest 0 mm in 1972	115
February	33.3°C26 Feb 1986	-3.9°C14 Feb 1903	78 mm28 Feb 1991	307 mm1998 · driest 0 mm in 1961	115
March	36.1°C31 Mar 1966	-2.2°C2 Mar 1922	78 mm3 Mar 1938	192 mm1991 · driest 0 mm in 1997	116
April	41.1°C6 Apr 1989	-0.6°C6 Apr 1922	50 mm6 Apr 1926	211 mm1926 · driest 0 mm in 1993	117
May	42.8°C29 May 1984	0.6°C10 May 1922	41 mm8 May 1912	105 mm1930 · driest 0 mm in 1986	118
June	45.6°C17 Jun 1917	4.4°C4 Jun 1908	25 mm5 Jun 1993	28 mm1993 · driest 0 mm in 1981	117
July	47.8°C22 Jul 2006	9.4°C6 Jul 1915	23 mm12 Jul 1957	23 mm1957 · driest 0 mm in 1977	116
August	45.0°C30 Aug 2007	7.8°C27 Aug 1954	49 mm17 Aug 1977	65 mm1983 · driest 0 mm in 1991	115
September	46.1°C13 Sep 1971	5.0°C9 Sep 1901	39 mm24 Sep 1939	97 mm1976 · driest 0 mm in 2003	117
October	43.3°C4 Oct 1987	-2.2°C30 Oct 1971	71 mm30 Oct 1936	157 mm2004 · driest 0 mm in 1952	117
November	36.7°C7 Nov 2006	-3.3°C23 Nov 1931	67 mm23 Nov 1965	194 mm1965 · driest 0 mm in 1904	114
December	32.2°C3 Dec 1958	-5.0°C8 Dec 1978	123 mm22 Dec 2010	320 mm2010 · driest 0 mm in 1962	115

Typical days per month at REDLANDS, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	5	<1	1	2
February	6	<1	<1	3
March	10	3	0	1
April	14	5	0	<1
May	20	10	0	<1
June	27	19	0	<1
July	31	28	0	0
August	31	29	0	<1
September	28	24	0	<1
October	21	12	0	<1
November	12	3	<1	<1
December	4	<1	1	1

How often, not how much — every day in REDLANDS’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	40%	18%	7%	22%	14.9–21.0°C
February	42%	21%	8%	23%	15.8–22.4°C
March	54%	19%	6%	19%	17.5–24.0°C
April	68%	13%	3%	10%	20.2–26.7°C
May	85%	6%	1%	3%	22.9–28.6°C
June	96%	2%	<1%	<1%	27.7–33.4°C
July	99%	2%	<1%	<1%	32.5–36.6°C
August	98%	2%	<1%	<1%	32.7–36.8°C
September	97%	3%	1%	1%	29.5–34.8°C
October	86%	7%	2%	4%	24.9–30.5°C
November	68%	10%	3%	8%	20.2–25.4°C
December	43%	15%	5%	15%	16.3–21.7°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.

1899Each stripe is one year’s mean temperature against the 102-year average. Warmest: 2014. Coolest: 1944.2014

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5331261
NOAA station: USC00047306 · REDLANDS
Station distance: 3.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 34.05°, 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 REDLANDS is what differs

Moreno Valley→Redlands→Loma Linda→Mentone→Browns (historical)→Crafton→

Or put two places side by side: Bryn Mawr vs Moreno Valley

Best time to visitBryn Mawr.