Lyon weather by month
What a typical year looks like in Lyon, Mississippi: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at CLARKSDALE, 4 km from Lyon; records cover 1892–2026.
The year at a glance
- Precipitation a year
- 55.9 in1419 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 11
- First fall freeze
- Nov 11
- Heating degree days
- 3,009
- Cooling degree days
- 2,088
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 19°−7° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
Lyon in January
Highs average 50°10° and lows 32°0°, with 5.5 in139 mm of precipitation in a typical January.
- Record high
- 80°27° (1943)
- Record low
- −8°−22° (1918)
- Heating degree days
- 740
- Cooling degree days
- 1
Lyon in February
Highs average 55°13° and lows 35°2°, with 5.6 in142 mm of precipitation in a typical February.
- Record high
- 84°29° (1917)
- Record low
- 0°−18° (1951)
- Heating degree days
- 552
- Cooling degree days
- 2
Lyon in March
Highs average 64°18° and lows 42°6°, with 5.4 in136 mm of precipitation in a typical March.
- Record high
- 89°32° (1908)
- Record low
- 13°−11° (1943)
- Heating degree days
- 382
- Cooling degree days
- 9
Lyon in April
Highs average 73°23° and lows 52°11°, with 6.2 in156 mm of precipitation in a typical April.
- Record high
- 94°34° (1894)
- Record low
- 29°−2° (1924)
- Heating degree days
- 140
- Cooling degree days
- 57
Lyon in May
Highs average 81°27° and lows 62°16°, with 5.1 in130 mm of precipitation in a typical May.
- Record high
- 101°38° (1934)
- Record low
- 34°1° (1909)
- Heating degree days
- 22
- Cooling degree days
- 222
Lyon in June
Highs average 88°31° and lows 69°21°, with 4 in100 mm of precipitation in a typical June.
- Record high
- 107°42° (1936)
- Record low
- 48°9° (1917)
- Heating degree days
- 0
- Cooling degree days
- 410
Lyon in July
Highs average 90°32° and lows 72°22°, with 4.2 in106 mm of precipitation in a typical July.
- Record high
- 108°42° (1930)
- Record low
- 52°11° (1926)
- Heating degree days
- 0
- Cooling degree days
- 499
Lyon in August
Highs average 91°33° and lows 70°21°, with 2.9 in72 mm of precipitation in a typical August.
- Record high
- 109°43° (1935)
- Record low
- 52°11° (1917)
- Heating degree days
- 0
- Cooling degree days
- 480
Lyon in September
Highs average 86°30° and lows 64°18°, with 3.3 in84 mm of precipitation in a typical September.
- Record high
- 107°42° (1925)
- Record low
- 36°2° (1916)
- Heating degree days
- 7
- Cooling degree days
- 307
Lyon in OctoberThis month
Highs average 76°24° and lows 52°11°, with 4.4 in112 mm of precipitation in a typical October.
- Record high
- 97°36° (1941)
- Record low
- 26°−3° (1910)
- Heating degree days
- 122
- Cooling degree days
- 91
Lyon in November
Highs average 63°17° and lows 41°5°, with 4.3 in108 mm of precipitation in a typical November.
- Record high
- 93°34° (1909)
- Record low
- 13°−11° (1950)
- Heating degree days
- 393
- Cooling degree days
- 9
Lyon in December
Highs average 53°12° and lows 35°2°, with 5.3 in134 mm of precipitation in a typical December.
- Record high
- 81°27° (1982)
- Record low
- −2°−19° (1989)
- Heating degree days
- 651
- Cooling degree days
- 1