United States · 1991–2020

Best time to visit
El Llano.

May leads for comfortable weather in El Llano: typically 24.7°C by day, 2.2°C at night, with 36 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high24.7°C

Typical low2.2°C

Rain in May36 mm

Comfort

May

May · September · June

74climate match

Beach

June

June · July · August

56climate match

Outdoors

April

April · October · May

78climate match

The weakest month is January, scoring 8 against May’s 74 — nights drop to -11.6°C, and days reach only 10.7°C, 13° 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

810.7° / -11.6°

Feb

1511.8° / -9.7°

Mar

3415.8° / -6.6°

Apr

5419.7° / -2.6°

May

7424.7° / 2.2°

Jun

6529.3° / 6.7°

Jul

6030.1° / 10.2°

Aug

6129.3° / 9.7°

Sep

7126° / 5°

Oct

5921.1° / -2°

Nov

3015.1° / -7.6°

Dec

910.7° / -11.4°

Monthly climate evidence for El Llano — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	10.7°C	-11.6°C	11 mm	1.8	9 h 59	8	Good coverage
February	11.8°C	-9.7°C	13 mm	1.9	10 h 50	15	Good coverage
March	15.8°C	-6.6°C	17 mm	2.1	11 h 51	34	Good coverage
April	19.7°C	-2.6°C	20 mm	2.5	13 h 02	54	Good coverage
May	24.7°C	2.2°C	36 mm	3.7	14 h 01	74	Good coverage
June	29.3°C	6.7°C	42 mm	4.4	14 h 33	65	Good coverage
July	30.1°C	10.2°C	79 mm	8.2	14 h 21	60	Good coverage
August	29.3°C	9.7°C	82 mm	8.6	13 h 30	61	Good coverage
September	26°C	5°C	53 mm	5.1	12 h 22	71	Good coverage
October	21.1°C	-2°C	36 mm	3.1	11 h 13	59	Good coverage
November	15.1°C	-7.6°C	16 mm	2.5	10 h 14	30	Good coverage
December	10.7°C	-11.4°C	16 mm	1.9	9 h 45	9	Good coverage

Records at LAS VEGAS WWTP, 1983–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.2°C2 Jan 1997	-30.0°C15 Jan 2007	29 mm18 Jan 1990	51 mm2026 · driest 0 mm in 2003	34
February	23.3°C25 Feb 2025	-35.6°C3 Feb 2011	32 mm25 Feb 2004	54 mm2022 · driest 0 mm in 2025	34
March	31.1°C22 Mar 2026	-22.8°C4 Mar 1989	34 mm14 Mar 1998	60 mm1985 · driest 0 mm in 1997	33
April	29.4°C21 Apr 1989	-12.2°C6 Apr 1996	50 mm4 Apr 2004	110 mm2004 · driest 0 mm in 1991	33
May	33.3°C27 May 2000	-11.7°C6 May 1990	48 mm30 May 2005	97 mm1994 · driest 0 mm in 2004	35
June	36.7°C27 Jun 1994	-2.2°C8 Jun 1984	51 mm19 Jun 2000	167 mm1986 · driest 0 mm in 1998	37
July	37.2°C19 Jul 2023	0.6°C1 Jul 1983	58 mm10 Jul 1999	178 mm1998 · driest 16 mm in 1993	35
August	35.0°C1 Aug 2003	-1.1°C12 Aug 1990	51 mm12 Aug 2008	181 mm1993 · driest 0 mm in 2015	36
September	34.4°C2 Sep 2011	-6.7°C28 Sep 1985	70 mm21 Sep 2007	185 mm1997 · driest 4 mm in 2023	34
October	31.1°C2 Oct 1994	-19.4°C29 Oct 1989	76 mm17 Oct 1994	135 mm1998 · driest 0 mm in 1995	36
November	27.2°C9 Nov 2006	-26.7°C27 Nov 1987	108 mm5 Nov 2024	108 mm2024 · driest 0 mm in 2005	34
December	23.9°C23 Dec 2025	-35.6°C23 Dec 1990	33 mm17 Dec 2010	46 mm1991 · driest 0 mm in 2022	33

Typical days per month at LAS VEGAS WWTP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	29	<1	2
February	0	0	25	<1	2
March	<1	0	27	<1	1
April	3	0	22	<1	<1
May	17	2	9	1	0
June	26	14	<1	2	0
July	28	18	0	3	0
August	26	14	0	3	0
September	20	3	3	2	0
October	7	<1	21	1	<1
November	<1	0	27	<1	1
December	0	0	29	<1	2

How often, not how much — every day in LAS VEGAS WWTP’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	3%	7%	2%	3%	6.1–13.7°C
February	4%	8%	1%	3%	8.3–15.3°C
March	26%	6%	1%	3%	12.5–17.9°C
April	53%	9%	2%	4%	16.7–22.2°C
May	77%	14%	5%	16%	21.3–26.5°C
June	81%	18%	6%	20%	26.5–31.3°C
July	74%	26%	9%	32%	28.4–31.6°C
August	69%	30%	10%	33%	26.8–31.3°C
September	77%	19%	6%	17%	23.4–28.1°C
October	58%	12%	4%	9%	18.4–23.0°C
November	22%	7%	1%	4%	11.6–17.5°C
December	5%	7%	2%	3%	6.2–13.5°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.

1984Each stripe is one year’s mean temperature against the 27-year average. Warmest: 2003. Coolest: 1987.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5466466
NOAA station: USC00294862 · LAS VEGAS WWTP
Station distance: 10.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 20 usable years
Daylight: Calculated from latitude 35.65°, 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 LAS VEGAS WWTP is what differs

Las Vegas→Tecolote→Agua Zarca→Arriba→Cedar Hill→East Las Vegas (historical)→

Or put two places side by side: El Llano vs Las Vegas

Best time to visitEl Llano.

May

June

April

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
El Llano.

The whole year,
without the guesswork.

Nearby, measured,
and named.