Quincy May Weather

Averages and records for weather in Quincy, Illinois in the month of May.
Typical Quincy May Weather
1991–2020
Average daily high 73.3 °F
Average daily low 53.9 °F
Average monthly precipitation 4.5 inches
Daily chance of precipitation 41.3%
Quincy May Weather Records
1901–2024
Highest temperature 103 °F May 30, 1934
Lowest temperature 26 °F May 4, 1907
Highest daily low 80 °F May 30, 1919
Lowest daily high 43 °F May 1, 1909
Hottest average high temperature 84.4 °F 1934
Coldest average high temperature 66.8 °F 1967
Most daily precipitation 3.2 inches May 8, 1909
Most monthly precipitation 13.7 inches 1935
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
May 1 68.4 48.5 88 29
May 2 68.7 48.8 90 29
May 3 68.9 49.1 88 31
May 4 69.1 49.3 89 26
May 5 69.5 49.6 92 33
May 6 69.8 50.0 91 32
May 7 70.1 50.3 91 32
May 8 70.4 50.7 90 36
May 9 70.7 51.1 90 31
May 10 71.1 51.5 92 28
May 11 71.4 51.8 92 31
May 12 71.8 52.3 93 35
May 13 72.1 52.7 92 35
May 14 72.6 53.1 94 35
May 15 72.9 53.5 93 35
May 16 73.4 53.8 92 34
May 17 73.8 54.2 92 35
May 18 74.2 54.5 93 35
May 19 74.5 54.9 90 41
May 20 74.7 55.2 94 38
May 21 74.9 55.5 95 38
May 22 75.1 55.7 94 38
May 23 75.3 55.9 93 40
May 24 75.7 56.2 94 40
May 25 75.9 56.5 95 34
May 26 76.2 56.7 95 36
May 27 76.5 57.1 96 34
May 28 76.9 57.6 95 38
May 29 77.4 58.1 96 38
May 30 77.8 58.4 103 42
May 31 78.1 58.8 102 42
Weather Station Details
Years Station Coordinates
1949–2024 Quincy Regional Airport location
1901–1948 Quincy location