United States · 1991–2020

Best time to visit
Boswell.

September leads for comfortable weather in Boswell: typically 24.9°C by day, 10.4°C at night, with 81 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.9°C

Typical low10.4°C

Rain in September81 mm

Comfort

September

September · August · June

79climate match

Beach

August

August · July · June

68climate match

Outdoors

September

September · October · May

72climate match

The weakest month is January, scoring 5 against September’s 79 — days reach only -0.3°C, 24° 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

5-0.3° / -9.2°

Feb

52.6° / -7.3°

Mar

98.8° / -2.5°

Apr

4016.4° / 3.4°

May

6722.2° / 9.6°

Jun

7227° / 15.3°

Jul

6628.2° / 16.4°

Aug

7727.7° / 15.4°

Sep

7924.9° / 10.4°

Oct

5118.1° / 4.5°

Nov

149.6° / -0.8°

Dec

52.1° / -6.7°

Monthly climate evidence for Boswell — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-0.3°C	-9.2°C	58 mm	6.6	9 h 34	5	Good coverage
February	2.6°C	-7.3°C	46 mm	5.4	10 h 35	5	Good coverage
March	8.8°C	-2.5°C	72 mm	7.3	11 h 49	9	Good coverage
April	16.4°C	3.4°C	95 mm	9.1	13 h 13	40	Good coverage
May	22.2°C	9.6°C	116 mm	10	14 h 24	67	Good coverage
June	27°C	15.3°C	120 mm	9.3	15 h 03	72	Good coverage
July	28.2°C	16.4°C	125 mm	8.5	14 h 48	66	Good coverage
August	27.7°C	15.4°C	81 mm	7	13 h 47	77	Good coverage
September	24.9°C	10.4°C	81 mm	6.4	12 h 25	79	Good coverage
October	18.1°C	4.5°C	84 mm	6.8	11 h 03	51	Good coverage
November	9.6°C	-0.8°C	76 mm	7.4	9 h 52	14	Good coverage
December	2.1°C	-6.7°C	57 mm	6.9	9 h 17	5	Good coverage

Records at BOSWELL 4WNW, 1989–2010
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.8°C3 Jan 2006	-31.1°C5 Jan 1999	73 mm8 Jan 2008	159 mm2005 · driest 18 mm in 2010	21
February	21.7°C26 Feb 2000	-27.2°C3 Feb 1996	57 mm6 Feb 2008	133 mm2008 · driest 5 mm in 1995	21
March	25.6°C28 Mar 2007	-19.4°C1 Mar 1993	79 mm11 Mar 1990	155 mm1998 · driest 20 mm in 2001	21
April	31.7°C26 Apr 1989	-12.2°C7 Apr 1994	122 mm12 Apr 1994	246 mm1994 · driest 26 mm in 2004	22
May	34.4°C17 May 2001	-2.8°C3 May 2005	97 mm16 May 1990	210 mm2004 · driest 24 mm in 1992	22
June	36.1°C21 Jun 1995	2.2°C1 Jun 2003	79 mm11 Jun 1998	269 mm2010 · driest 35 mm in 1991	22
July	37.2°C15 Jul 1995	6.7°C2 Jul 2001	66 mm6 Jul 2003	298 mm2003 · driest 17 mm in 1991	22
August	35.6°C3 Aug 1991	5.6°C31 Aug 2009	89 mm19 Aug 2002	194 mm2002 · driest 25 mm in 2008	21
September	35.6°C7 Sep 1998	-4.4°C23 Sep 1995	68 mm15 Sep 2008	216 mm1993 · driest 22 mm in 1998	21
October	31.7°C4 Oct 1997	-6.1°C22 Oct 1997	55 mm14 Oct 2001	214 mm2001 · driest 28 mm in 1994	21
November	25.0°C2 Nov 2000	-17.8°C8 Nov 1991	47 mm20 Nov 1991	144 mm1992 · driest 13 mm in 1999	21
December	20.0°C7 Dec 1998	-30.6°C22 Dec 1989	71 mm30 Dec 1990	167 mm1990 · driest 9 mm in 1989	20

Typical days per month at BOSWELL 4WNW, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	2	3
February	0	0	26	1	2
March	<1	0	22	3	<1
April	3	<1	8	4	<1
May	11	3	<1	4	0
June	22	8	0	4	0
July	26	10	0	4	0
August	25	8	0	2	0
September	16	5	<1	2	0
October	5	<1	6	3	0
November	<1	0	18	3	<1
December	0	0	27	2	2

How often, not how much — every day in BOSWELL 4WNW’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	0%	21%	5%	18%	-3.6–4.8°C
February	0%	19%	5%	16%	-0.8–5.4°C
March	6%	24%	8%	23%	6.4–11.9°C
April	22%	31%	12%	41%	13.9–18.9°C
May	46%	32%	13%	41%	19.4–24.5°C
June	66%	31%	11%	36%	25.7–28.6°C
July	72%	28%	14%	30%	26.9–30.1°C
August	77%	23%	8%	24%	25.8–29.2°C
September	68%	21%	8%	19%	22.8–27.3°C
October	31%	22%	11%	21%	16.3–19.2°C
November	5%	24%	9%	25%	6.2–12.9°C
December	0%	22%	5%	22%	-2.2–5.2°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4918302
NOAA station: USC00120858 · BOSWELL 4WNW
Station distance: 6.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 18 usable years
Daylight: Calculated from latitude 40.52°, 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 BOSWELL 4WNW is what differs

Fowler→Oxford→Ambia→Tab→Cutmer→Hallock→

Or put two places side by side: Boswell vs Fowler

Best time to visitBoswell.

September

August

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Boswell.

The whole year,
without the guesswork.

Nearby, measured,
and named.