United States · 1991–2020

Best time to visit
Derby.

November leads for comfortable weather in Derby: typically 23.5°C by day, 10.7°C at night, with 44 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortNovember

Typical high23.5°C

Typical low10.7°C

Rain in November44 mm

Comfort

November

November · March · April

89climate match

Beach

April

April · October · May

81climate match

Outdoors

February

February · December · January

90climate match

The weakest month is July, scoring 41 against November’s 89 — days average 35.8°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

6619.1° / 5.6°

Feb

7821.5° / 7.6°

Mar

8724.6° / 11.3°

Apr

8528.6° / 14.9°

May

5832.1° / 19.7°

Jun

4434.9° / 22.3°

Jul

4135.8° / 23°

Aug

4236.1° / 23°

Sep

5132.9° / 20.5°

Oct

7729.2° / 16°

Nov

8923.5° / 10.7°

Dec

6819.5° / 6.2°

Monthly climate evidence for Derby — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	19.1°C	5.6°C	32 mm	4	10 h 29	66	Good coverage
February	21.5°C	7.6°C	33 mm	3.7	11 h 08	78	Good coverage
March	24.6°C	11.3°C	53 mm	5.4	11 h 55	87	Good coverage
April	28.6°C	14.9°C	35 mm	3.3	12 h 49	85	Good coverage
May	32.1°C	19.7°C	72 mm	4.4	13 h 34	58	Good coverage
June	34.9°C	22.3°C	72 mm	4.6	13 h 58	44	Good coverage
July	35.8°C	23°C	70 mm	3.8	13 h 49	41	Good coverage
August	36.1°C	23°C	62 mm	3.3	13 h 10	42	Good coverage
September	32.9°C	20.5°C	83 mm	5.8	12 h 18	51	Good coverage
October	29.2°C	16°C	59 mm	4.3	11 h 26	77	Good coverage
November	23.5°C	10.7°C	44 mm	3.8	10 h 41	89	Good coverage
December	19.5°C	6.2°C	29 mm	4.4	10 h 19	68	Good coverage

Records at DILLEY, 1916–2008
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	34.4°C23 Jan 1943	-12.8°C12 Jan 1962	79 mm5 Jan 1958	177 mm1958 · driest 0 mm in 1917	88
February	37.2°C21 Feb 1986	-12.8°C2 Feb 1951	74 mm19 Feb 1932	174 mm1923 · driest 0 mm in 1954	87
March	40.0°C27 Mar 1950	-5.6°C2 Mar 1980	76 mm29 Mar 1922	122 mm2007 · driest 0 mm in 1971	88
April	42.8°C21 Apr 1984	-0.6°C10 Apr 1973	102 mm25 Apr 1949	181 mm1949 · driest 0 mm in 1917	89
May	43.3°C29 May 1927	6.1°C1 May 1925	125 mm16 May 1980	278 mm1980 · driest 0 mm in 2003	90
June	43.3°C12 Jun 1942	11.1°C3 Jun 1919	137 mm14 Jun 1981	268 mm1987 · driest 0 mm in 1980	90
July	43.9°C9 Jul 1939	15.6°C2 Jul 1985	267 mm1 Jul 2002	475 mm2002 · driest 0 mm in 1965	88
August	43.3°C23 Aug 1917	16.1°C14 Aug 1967	252 mm23 Aug 2004	338 mm1998 · driest 0 mm in 1917	88
September	43.3°C6 Sep 2000	5.6°C27 Sep 1942	257 mm9 Sep 2002	365 mm2002 · driest 1 mm in 1979	88
October	40.0°C4 Oct 1979	-2.2°C31 Oct 1993	259 mm7 Oct 1981	291 mm1986 · driest 0 mm in 1952	88
November	35.6°C28 Nov 2005	-4.4°C29 Nov 1976	72 mm5 Nov 1932	152 mm2000 · driest 0 mm in 1949	87
December	35.0°C7 Dec 1951	-11.1°C25 Dec 1983	143 mm29 Dec 1937	230 mm1937 · driest 0 mm in 1950	87

Typical days per month at DILLEY, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	6	<1	3	1
February	10	3	1	1
March	17	5	<1	2
April	25	12	0	1
May	30	23	0	2
June	30	28	0	2
July	31	30	0	2
August	31	31	0	1
September	29	25	0	2
October	26	16	<1	2
November	14	3	<1	1
December	6	<1	3	<1

How often, not how much — every day in DILLEY’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	44%	14%	3%	12%	15.0–21.6°C
February	58%	15%	4%	11%	17.7–24.6°C
March	75%	12%	3%	8%	21.4–27.9°C
April	86%	13%	5%	10%	26.6–31.9°C
May	83%	16%	8%	13%	29.6–34.3°C
June	85%	15%	7%	13%	32.5–37.3°C
July	88%	12%	4%	9%	34.5–38.7°C
August	88%	11%	4%	10%	35.0–38.8°C
September	82%	18%	7%	15%	31.3–35.9°C
October	85%	13%	5%	12%	27.4–32.1°C
November	70%	12%	4%	11%	20.9–26.5°C
December	48%	15%	3%	13%	16.3–22.3°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.

1917Each stripe is one year’s mean temperature against the 82-year average. Warmest: 1917. Coolest: 1968.2007

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4685956
NOAA station: USC00412458 · DILLEY
Station distance: 11.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 28.77°, 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 DILLEY is what differs

Dilley→Hilltop→Derby Colonia→Divot→Hilltop Colonia→Las Flores→

Or put two places side by side: Derby vs Dilley

Best time to visitDerby.