United States · 1991–2020

Best time to visit
Sam Rayburn.

April leads for comfortable weather in Sam Rayburn: typically 25.1°C by day, 12.5°C at night, with 116 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortApril

Typical high25.1°C

Typical low12.5°C

Rain in April116 mm

Comfort

April

April · October · May

78climate match

Beach

September

September · May · July

71climate match

Outdoors

November

November · March · February

74climate match

The weakest month is January, scoring 31 against April’s 78 — days reach only 15.4°C, 9° below the 24°C the score treats as ideal, and nights drop to 3.4°C.

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

3115.4° / 3.4°

Feb

4517.5° / 5.3°

Mar

6121.2° / 9°

Apr

7825.1° / 12.5°

May

6229.3° / 17.3°

Jun

4232.4° / 20.9°

Jul

4334.1° / 22°

Aug

3734.2° / 21.6°

Sep

5431.4° / 19.3°

Oct

7126.6° / 13.3°

Nov

5820.5° / 8.3°

Dec

3416.4° / 4.5°

Monthly climate evidence for Sam Rayburn — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	15.4°C	3.4°C	139 mm	8.5	10 h 20	31	Strong coverage
February	17.5°C	5.3°C	118 mm	7.7	11 h 02	45	Strong coverage
March	21.2°C	9°C	138 mm	7.7	11 h 54	61	Strong coverage
April	25.1°C	12.5°C	116 mm	6.2	12 h 53	78	Strong coverage
May	29.3°C	17.3°C	124 mm	7.6	13 h 43	62	Strong coverage
June	32.4°C	20.9°C	141 mm	8.4	14 h 09	42	Strong coverage
July	34.1°C	22°C	89 mm	7	13 h 59	43	Strong coverage
August	34.2°C	21.6°C	128 mm	7.9	13 h 16	37	Strong coverage
September	31.4°C	19.3°C	110 mm	6.7	12 h 19	54	Strong coverage
October	26.6°C	13.3°C	141 mm	6.1	11 h 22	71	Strong coverage
November	20.5°C	8.3°C	139 mm	6.7	10 h 32	58	Strong coverage
December	16.4°C	4.5°C	155 mm	8.5	10 h 08	34	Strong coverage

What has changed

Sam Rayburn runs +1.1°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+2.4

Feb

+2.8

Mar

+1.5

Apr

+0.4

May

+0.4

Jun

+0.4

Jul

+0.6

Aug

+0.4

Sep

+0.4

Oct

+1.4

Nov

+0.9

Dec

+1.6

April daytime highs, 2014–2025. Last recorded: 26.8°C.

Records at SAM RAYBURN DAM, 1968–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	28.3°C31 Jan 2002	-11.7°C10 Jan 1999	110 mm7 Jan 1998	368 mm1990 · driest 20 mm in 1971	56
February	31.1°C23 Feb 1996	-10.0°C5 Feb 1996	199 mm12 Feb 1984	477 mm2018 · driest 34 mm in 2001	56
March	32.8°C31 Mar 1989	-7.2°C3 Mar 2002	230 mm13 Mar 1999	318 mm2015 · driest 22 mm in 1996	56
April	33.9°C21 Apr 1987	-4.4°C17 Apr 1999	108 mm4 Apr 1999	274 mm1968 · driest 7 mm in 1987	56
May	38.3°C31 May 1998	3.3°C7 May 1992	229 mm17 May 2021	551 mm2021 · driest 0 mm in 1998	56
June	39.4°C1 Jun 1998	10.0°C1 Jun 1984	162 mm8 Jun 2001	412 mm1989 · driest 21 mm in 2022	56
July	41.7°C17 Jul 2000	15.0°C28 Jul 1994	112 mm15 Jul 2014	367 mm2024 · driest 0 mm in 1993	55
August	41.7°C3 Aug 1998	11.1°C17 Aug 1992	153 mm19 Aug 1977	539 mm2017 · driest 0 mm in 1999	55
September	42.8°C5 Sep 2000	3.9°C28 Sep 1993	356 mm24 Sep 2005	384 mm2005 · driest 6 mm in 1982	55
October	35.0°C8 Oct 1990	-6.7°C31 Oct 1993	257 mm17 Oct 2006	609 mm2006 · driest 0 mm in 2005	54
November	30.6°C2 Nov 1984	-7.8°C28 Nov 1992	187 mm24 Nov 1986	438 mm2004 · driest 20 mm in 1999	54
December	29.4°C2 Dec 1970	-13.9°C23 Dec 1989	144 mm30 Dec 2006	325 mm1982 · driest 27 mm in 1980	55

Typical days per month at SAM RAYBURN DAM, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	1	0	10	4
February	4	<1	6	3
March	9	<1	2	4
April	18	3	<1	3
May	28	15	0	3
June	30	26	0	4
July	31	29	0	3
August	31	29	0	4
September	29	22	0	3
October	21	8	<1	3
November	7	<1	3	3
December	2	0	8	4

The best month has moved. On the 1961–1990 numbers the strongest month here was April (scoring 82); on 2011–2025 it is October (82). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in SAM RAYBURN DAM’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	19%	27%	14%	30%	11.7–18.2°C
February	29%	27%	11%	30%	13.5–21.0°C
March	49%	25%	12%	24%	18.9–24.3°C
April	71%	21%	11%	20%	22.7–27.1°C
May	74%	26%	13%	29%	27.8–30.7°C
June	73%	27%	14%	29%	30.7–33.8°C
July	76%	24%	11%	27%	32.3–35.8°C
August	75%	25%	10%	29%	32.7–36.0°C
September	78%	22%	9%	19%	29.8–33.1°C
October	75%	19%	10%	21%	24.8–28.2°C
November	46%	23%	12%	25%	18.1–23.2°C
December	21%	27%	13%	31%	14.0–18.9°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.

1968Each stripe is one year’s mean temperature against the 54-year average. Warmest: 2023. Coolest: 1993.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4726133
NOAA station: USC00417936 · SAM RAYBURN DAM
Station distance: 6.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 26 usable years
Daylight: Calculated from latitude 31.06°, 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 SAM RAYBURN DAM is what differs

Jasper→Newton→Pineland→Browndell→Anthony Harbor→Blackjack→

Or put two places side by side: Sam Rayburn vs Jasper

Best time to visitSam Rayburn.

April

September

November

The whole year,without the guesswork.

Sam Rayburn runs +1.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Sam Rayburn.

The whole year,
without the guesswork.

Sam Rayburn runs +1.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.