United States · 1991–2020

Best time to visit
Byram.

September leads for comfortable weather in Byram: typically 25.2°C by day, 13.9°C at night, with 115 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.2°C

Typical low13.9°C

Rain in September115 mm

Comfort

September

September · June · May

79climate match

Beach

August

August · July · June

70climate match

Outdoors

October

October · May · April

73climate match

The weakest month is January, scoring 5 against September’s 79 — days reach only 3.5°C, 20° 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

53.5° / -5.1°

Feb

55.2° / -4.2°

Mar

1410.2° / -0.3°

Apr

4517.1° / 5.1°

May

7122.3° / 10.6°

Jun

7327.1° / 15.6°

Jul

5529.8° / 18.4°

Aug

6428.7° / 17.7°

Sep

7925.2° / 13.9°

Oct

5418.4° / 7.6°

Nov

2912.3° / 2.1°

Dec

56.3° / -2.1°

Monthly climate evidence for Byram — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.5°C	-5.1°C	71 mm	7.4	9 h 35	5	Good coverage
February	5.2°C	-4.2°C	59 mm	7.6	10 h 36	5	Good coverage
March	10.2°C	-0.3°C	88 mm	9	11 h 49	14	Good coverage
April	17.1°C	5.1°C	98 mm	9.2	13 h 13	45	Good coverage
May	22.3°C	10.6°C	104 mm	10	14 h 24	71	Good coverage
June	27.1°C	15.6°C	107 mm	9.4	15 h 02	73	Good coverage
July	29.8°C	18.4°C	136 mm	9	14 h 47	55	Good coverage
August	28.7°C	17.7°C	116 mm	8.3	13 h 46	64	Good coverage
September	25.2°C	13.9°C	115 mm	7.4	12 h 25	79	Good coverage
October	18.4°C	7.6°C	104 mm	8.1	11 h 03	54	Good coverage
November	12.3°C	2.1°C	79 mm	6.7	9 h 53	29	Good coverage
December	6.3°C	-2.1°C	99 mm	8.6	9 h 18	5	Good coverage

Records at DOYLESTOWN AP, 1999–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C6 Jan 2007	-19.3°C24 Jan 2011	74 mm9 Jan 2024	159 mm2024 · driest 0 mm in 2026	27
February	25.0°C21 Feb 2018	-19.9°C24 Feb 2015	77 mm13 Feb 2008	151 mm2008 · driest 9 mm in 2025	27
March	28.3°C29 Mar 2025	-14.9°C6 Mar 2015	70 mm23 Mar 2024	174 mm2024 · driest 23 mm in 2006	27
April	35.0°C17 Apr 2002	-6.6°C6 Apr 2016	110 mm15 Apr 2007	290 mm2007 · driest 42 mm in 2021	27
May	35.0°C31 May 2022	0.0°C9 May 2020	109 mm27 May 2018	233 mm2018 · driest 0 mm in 2025	27
June	37.2°C22 Jun 2024	5.0°C1 Jun 2009	104 mm16 Jun 2001	241 mm2006 · driest 0 mm in 2025	27
July	40.6°C22 Jul 2011	9.4°C3 Jul 2001	89 mm6 Jul 2005	309 mm2005 · driest 20 mm in 2025	27
August	36.7°C1 Aug 1999	10.0°C15 Aug 2014	104 mm27 Aug 2011	391 mm2011 · driest 24 mm in 2008	27
September	35.6°C8 Sep 2016	2.8°C30 Sep 2000	189 mm16 Sep 1999	322 mm2011 · driest 10 mm in 2007	27
October	35.6°C2 Oct 2019	-3.8°C31 Oct 2011	129 mm8 Oct 2005	251 mm2005 · driest 0 mm in 2024	27
November	27.2°C6 Nov 2024	-11.6°C23 Nov 2018	65 mm8 Nov 2006	192 mm2018 · driest 0 mm in 1999	27
December	22.2°C5 Dec 2001	-15.0°C14 Dec 2005	70 mm11 Dec 2003	223 mm2023 · driest 24 mm in 2021	27

Typical days per month at DOYLESTOWN AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	26	2
February	0	0	24	2
March	<1	0	17	3
April	3	<1	4	3
May	10	3	0	4
June	22	8	0	4
July	29	15	0	4
August	27	12	0	3
September	16	4	0	3
October	3	<1	2	4
November	<1	0	11	3
December	0	0	22	3

How often, not how much — every day in DOYLESTOWN 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	<1%	24%	8%	25%	0.2–7.0°C
February	1%	25%	5%	29%	1.5–8.8°C
March	6%	28%	10%	35%	7.4–14.1°C
April	26%	31%	9%	38%	15.3–19.5°C
May	53%	31%	11%	43%	20.5–24.4°C
June	70%	29%	11%	36%	25.9–29.0°C
July	72%	28%	13%	30%	27.8–32.1°C
August	73%	27%	11%	26%	27.1–30.2°C
September	71%	25%	11%	27%	23.3–27.2°C
October	35%	24%	11%	25%	16.7–21.3°C
November	7%	22%	8%	20%	9.9–14.9°C
December	<1%	28%	12%	35%	3.9–9.7°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.

2000Each stripe is one year’s mean temperature against the 26-year average. Warmest: 2024. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5096113
NOAA station: USW00054786 · DOYLESTOWN AP
Station distance: 11.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 40.42°, 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 DOYLESTOWN AP is what differs

Doylestown→Chalfont→New Britain→Plumsteadville→Dublin→Pine Run→

Or put two places side by side: Byram vs Doylestown

Best time to visitByram.