United States · 1991–2020

Best time to visit
Terril.

September leads for comfortable weather in Terril: typically 23.5°C by day, 12°C at night, with 83 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.5°C

Typical low12°C

Rain in September83 mm

Comfort

September

September · June · August

84climate match

Beach

July

July · August · June

77climate match

Outdoors

May

May · September · October

77climate match

The weakest month is January, scoring 5 against September’s 84 — days reach only -4°C, 28° 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

5-4° / -12.8°

Feb

5-2° / -11.4°

Mar

55.5° / -4.3°

Apr

3313.7° / 2.6°

May

6220.4° / 9.4°

Jun

7726.1° / 15.3°

Jul

6928.6° / 17.8°

Aug

7726.8° / 16.3°

Sep

8423.5° / 12°

Oct

4514.9° / 4.2°

Nov

116.9° / -2.9°

Dec

5-1.7° / -10.2°

Monthly climate evidence for Terril — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-4°C	-12.8°C	13 mm	3	9 h 18	5	Good coverage
February	-2°C	-11.4°C	17 mm	3.5	10 h 26	5	Good coverage
March	5.5°C	-4.3°C	35 mm	4.3	11 h 47	5	Good coverage
April	13.7°C	2.6°C	80 mm	7.6	13 h 21	33	Good coverage
May	20.4°C	9.4°C	109 mm	9.4	14 h 39	62	Good coverage
June	26.1°C	15.3°C	112 mm	8.6	15 h 22	77	Good coverage
July	28.6°C	17.8°C	84 mm	6.8	15 h 05	69	Good coverage
August	26.8°C	16.3°C	95 mm	6.9	13 h 57	77	Good coverage
September	23.5°C	12°C	83 mm	5.8	12 h 27	84	Good coverage
October	14.9°C	4.2°C	57 mm	5.7	10 h 57	45	Good coverage
November	6.9°C	-2.9°C	32 mm	3.7	9 h 38	11	Good coverage
December	-1.7°C	-10.2°C	22 mm	3.7	8 h 59	5	Good coverage

Records at SPIRIT LAKE, 1893–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.8°C26 Jan 2002	-34.4°C25 Jan 1894	34 mm24 Jan 2017	47 mm2023 · driest 0 mm in 1899	41
February	21.1°C26 Feb 1896	-39.4°C9 Feb 1899	36 mm28 Feb 2012	53 mm2012 · driest 1 mm in 2026	39
March	30.0°C22 Mar 2026	-27.8°C14 Mar 1897	44 mm25 Mar 2024	82 mm2006 · driest 6 mm in 1998	38
April	34.4°C29 Apr 2007	-15.0°C4 Apr 2018	60 mm15 Apr 2018	152 mm2019 · driest 17 mm in 1899	38
May	37.8°C28 May 2018	-3.3°C3 May 1900	87 mm5 May 2007	331 mm1903 · driest 9 mm in 1900	39
June	39.4°C30 Jun 1894	0.6°C7 Jun 1901	111 mm22 Jun 2024	427 mm2024 · driest 38 mm in 1894	39
July	42.8°C26 Jul 1894	4.4°C9 Jul 1895	73 mm14 Jul 2011	238 mm2011 · driest 2 mm in 1894	40
August	40.0°C8 Aug 1894	4.4°C2 Aug 1904	129 mm18 Aug 2007	269 mm2017 · driest 21 mm in 2019	38
September	38.3°C18 Sep 1895	-6.1°C29 Sep 1899	152 mm11 Sep 1900	294 mm2004 · driest 6 mm in 1999	39
October	35.0°C1 Oct 1897	-11.1°C29 Oct 1893	94 mm1 Oct 2021	175 mm2021 · driest 8 mm in 2011	40
November	25.6°C8 Nov 2006	-27.2°C22 Nov 1898	70 mm26 Nov 1896	138 mm2015 · driest 1 mm in 2023	40
December	18.3°C1 Dec 1998	-32.8°C18 Dec 2016	34 mm12 Dec 2015	62 mm2018 · driest 1 mm in 1895	40

Typical days per month at SPIRIT LAKE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	29	<1	3
February	0	0	26	<1	4
March	<1	0	23	1	2
April	2	<1	9	3	1
May	8	2	<1	4	0
June	19	7	0	4	0
July	27	12	0	3	0
August	22	6	0	3	0
September	13	3	0	2	0
October	2	<1	7	2	<1
November	<1	0	20	1	1
December	0	0	29	<1	3

How often, not how much — every day in SPIRIT LAKE’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%	10%	<1%	4%	-6.8–-0.2°C
February	<1%	11%	<1%	4%	-6.9–3.5°C
March	4%	15%	4%	9%	1.3–10.2°C
April	21%	25%	9%	28%	11.0–16.8°C
May	43%	29%	12%	37%	19.1–23.8°C
June	68%	29%	13%	32%	24.3–28.3°C
July	77%	23%	10%	19%	27.4–31.4°C
August	78%	22%	10%	16%	25.8–30.0°C
September	66%	18%	8%	16%	21.6–26.8°C
October	28%	16%	6%	11%	12.2–19.6°C
November	5%	11%	4%	7%	2.8–10.8°C
December	0%	11%	2%	5%	-5.2–2.6°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.

1896Each stripe is one year’s mean temperature against the 29-year average. Warmest: 2012. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4878369
NOAA station: USC00137859 · SPIRIT LAKE
Station distance: 18.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 43.31°, 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 SPIRIT LAKE is what differs

Spirit Lake→Orleans→Superior→Beaches Resort→Montgomery→Sand Bar Beach Resort and Trailer Court→

Or put two places side by side: Terril vs Spirit Lake

Best time to visitTerril.

September

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Terril.

The whole year,
without the guesswork.

Nearby, measured,
and named.