------------------------------------------------------------------------------------------------- 1971-2000 Daily/Monthly Station Normals Provided by National Climatic Data Center/NESDIS/NOAA ------------------------------------------------------------------------------------------------- Station COOP ID: 135235 Station Name, State, Division, Call: MASON CITY AP IA 02 MCW Latitude, Longitude, Elevation, Elements: 43 09 07 -093 20 13 1225 XNP ------------------------------------------------------------------------------------------------- Minimum Temperature (deg F [tenths deg F for monthly]) DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH ------------------------------------------------------------------------------------------------- JAN 6 6 5 5 5 5 5 5 5 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 6 6 6 6 6 7 7 51 FEB 7 8 8 8 9 9 9 10 10 10 11 11 12 12 12 13 13 13 14 14 15 15 15 16 16 17 17 18 122 MAR 18 18 19 19 20 20 20 21 21 22 22 23 23 23 24 24 24 25 25 26 26 26 27 27 28 28 28 29 29 29 30 240 APR 30 30 31 31 32 32 32 33 33 33 34 34 34 35 35 36 36 36 37 37 38 38 38 39 39 40 40 40 41 41 355 MAY 42 42 42 43 43 44 44 44 45 45 45 46 46 47 47 47 48 48 48 49 49 50 50 50 51 51 51 52 52 52 53 473 JUN 53 54 54 54 55 55 55 55 56 56 56 57 57 57 57 58 58 58 58 58 59 59 59 59 59 60 60 60 60 60 572 JUL 60 60 61 61 61 61 61 61 61 61 61 61 61 61 62 62 62 62 62 62 62 62 62 62 62 62 62 62 61 61 61 614 AUG 61 61 61 61 61 61 61 61 61 60 60 60 60 60 59 59 59 59 58 58 58 58 57 57 57 57 56 56 56 55 55 588 SEP 54 54 54 53 53 53 52 52 51 51 51 50 50 50 49 49 48 48 48 47 47 47 46 46 45 45 45 44 44 44 490 OCT 43 43 43 42 42 41 41 41 40 40 39 39 39 38 38 37 37 37 36 36 35 35 34 34 34 33 33 32 32 31 31 373 NOV 31 30 30 29 29 28 28 27 27 27 26 26 25 25 24 24 23 23 22 22 21 21 21 20 20 19 19 18 18 17 240 DEC 17 16 16 15 15 15 14 14 13 13 12 12 12 11 11 11 10 10 10 9 9 9 8 8 8 7 7 7 7 6 6 109 ------------------------------------------------------------------------------------------------- Maximum Temperature (deg F [tenths deg F for monthly]) DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH ------------------------------------------------------------------------------------------------- JAN 23 23 23 23 22 22 22 22 22 22 22 22 22 22 22 22 22 22 23 23 23 23 23 23 23 23 24 24 24 24 24 227 FEB 25 25 25 25 26 26 26 27 27 27 27 28 28 28 29 29 30 30 30 31 31 31 32 32 33 33 34 34 289 MAR 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 41 42 43 43 44 44 45 45 46 46 47 47 48 48 49 49 417 APR 50 50 51 52 52 53 53 54 54 55 55 56 56 57 57 58 58 59 59 60 60 60 61 61 62 62 63 63 64 64 573 MAY 65 65 65 66 66 67 67 68 68 68 69 69 70 70 70 71 71 72 72 72 73 73 73 74 74 74 75 75 75 76 76 706 JUN 76 77 77 77 78 78 78 79 79 79 79 80 80 80 80 81 81 81 81 81 81 82 82 82 82 82 82 82 83 83 801 JUL 83 83 83 83 83 83 83 83 83 83 83 83 83 84 84 84 84 84 84 84 84 84 83 83 83 83 83 83 83 83 83 833 AUG 83 83 83 83 83 82 82 82 82 82 82 82 82 81 81 81 81 81 81 80 80 80 80 79 79 79 79 78 78 78 78 808 SEP 77 77 77 77 76 76 76 75 75 75 74 74 74 74 73 73 73 72 72 72 71 71 70 70 70 69 69 69 68 68 729 OCT 67 67 67 66 66 65 65 64 64 64 63 63 62 62 61 60 60 59 59 58 58 57 57 56 55 55 54 53 53 52 51 601 NOV 51 50 49 49 48 47 47 46 45 45 44 44 43 42 42 41 40 40 39 39 38 38 37 37 36 35 35 34 34 33 416 DEC 33 32 32 31 31 30 30 30 29 29 28 28 28 27 27 26 26 26 26 25 25 25 25 24 24 24 24 23 23 23 23 270 ------------------------------------------------------------------------------------------------- Average Temperature (deg F [tenths deg F for monthly]) DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH ------------------------------------------------------------------------------------------------- JAN 14 14 14 14 14 14 14 13 13 13 13 13 13 13 13 13 13 13 14 14 14 14 14 14 14 15 15 15 15 16 16 139 FEB 16 16 17 17 17 18 18 18 18 19 19 20 20 20 21 21 21 22 22 22 23 23 24 24 25 25 25 26 206 MAR 26 27 27 28 28 28 29 29 30 30 31 31 32 32 32 33 33 34 34 35 35 36 36 36 37 37 38 38 39 39 40 329 APR 40 40 41 41 42 42 43 43 44 44 44 45 45 46 46 47 47 48 48 48 49 49 50 50 51 51 51 52 52 53 464 MAY 53 54 54 54 55 55 56 56 56 57 57 58 58 58 59 59 59 60 60 61 61 61 62 62 62 63 63 63 64 64 65 590 JUN 65 65 66 66 66 66 67 67 67 68 68 68 68 69 69 69 69 70 70 70 70 70 70 71 71 71 71 71 71 72 687 JUL 72 72 72 72 72 72 72 72 72 72 72 72 72 73 73 73 73 73 73 73 73 73 73 73 73 72 72 72 72 72 72 724 AUG 72 72 72 72 72 72 72 71 71 71 71 71 71 71 70 70 70 70 69 69 69 69 69 68 68 68 67 67 67 67 66 698 SEP 66 66 65 65 65 64 64 64 63 63 63 62 62 62 61 61 61 60 60 59 59 59 58 58 58 57 57 56 56 56 610 OCT 55 55 55 54 54 53 53 53 52 52 51 51 50 50 49 49 48 48 48 47 47 46 46 45 44 44 43 43 42 42 41 487 NOV 41 40 40 39 38 38 37 37 36 36 35 35 34 34 33 32 32 31 31 30 30 29 29 28 28 27 27 26 26 25 328 DEC 25 24 24 23 23 23 22 22 21 21 20 20 20 19 19 19 18 18 18 17 17 17 16 16 16 16 15 15 15 15 15 190 ------------------------------------------------------------------------------------------------- Heating Degree Days DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH ------------------------------------------------------------------------------------------------- JAN 51 51 51 51 51 51 51 52 52 52 52 52 52 52 52 52 52 52 51 51 51 51 51 51 51 50 50 50 50 50 49 1585 FEB 49 49 48 48 48 47 47 47 47 46 46 46 45 45 44 44 44 43 43 43 42 42 41 41 41 40 40 39 1245 MAR 39 38 38 37 37 37 36 36 35 35 34 34 34 33 33 32 32 31 31 30 30 29 29 29 28 28 27 27 26 26 25 996 APR 25 24 24 24 23 23 22 22 21 21 20 20 20 19 19 18 18 18 17 17 16 16 15 15 15 14 14 14 13 13 560 MAY 12 12 12 11 11 10 10 10 9 9 9 8 8 8 8 7 7 7 6 6 6 6 5 5 5 5 4 4 4 4 3 231 JUN 3 3 3 3 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 37 JUL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0-99-99-99-99-99-99-99-99-99-99-99-99-99 13 AUG 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 37 SEP 2 3 3 3 3 3 3 3 4 4 4 4 4 5 5 5 5 6 6 6 7 7 7 7 8 8 8 9 9 9 160 OCT 10 10 11 11 11 12 12 13 13 13 14 14 15 15 16 16 17 17 17 18 18 19 19 20 21 21 22 22 23 23 24 507 NOV 24 25 25 26 27 27 28 28 29 29 30 30 31 31 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 966 DEC 40 41 41 42 42 43 43 43 44 44 45 45 45 46 46 46 47 47 47 48 48 48 49 49 49 49 50 50 50 50 51 1428 ------------------------------------------------------------------------------------------------- Cooling Degree Days DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH ------------------------------------------------------------------------------------------------- JAN 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FEB 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 MAR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 APR 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0-99 1 MAY 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 3 3 3 42 JUN 3 3 3 3 3 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 7 7 7 146 JUL 7 7 7 7 7 7 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 242 AUG 8 8 8 7 7 7 7 7 7 7 7 7 6 6 6 6 6 6 6 6 5 5 5 5 5 4 4 4 4 4 4 184 SEP 3 3 3 3 3 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 39 OCT -99 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 NOV 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 DEC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ------------------------------------------------------------------------------------------------- Total Precipitation (Hundreths of an Inch) DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 MONTH ------------------------------------------------------------------------------------------------- JAN 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 98 FEB 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 5 92 MAR 5 5 5 5 6 6 6 6 6 6 7 7 7 7 7 7 7 8 8 8 8 8 8 8 9 9 9 9 9 9 9 224 APR 10 10 10 10 10 10 10 10 11 11 11 11 11 11 11 11 11 12 12 12 12 12 12 12 12 12 12 12 12 13 336 MAY 12 13 13 13 13 13 13 13 13 13 13 13 14 14 14 14 14 14 14 14 14 15 15 15 15 15 15 15 16 16 16 434 JUN 16 16 16 16 16 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 17 16 16 16 16 16 16 16 15 496 JUL 15 15 15 15 15 14 14 14 14 14 14 14 14 14 14 14 13 13 13 13 13 14 14 14 14 14 14 14 14 14 14 434 AUG 14 14 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 14 14 14 14 14 14 14 13 13 452 SEP 13 13 13 13 12 12 12 12 12 12 12 11 11 11 11 11 11 10 10 10 10 10 10 10 10 10 9 9 9 9 328 OCT 9 9 9 9 9 9 9 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 7 7 7 7 7 250 NOV 8 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 6 6 6 6 6 6 6 6 6 5 5 5 196 DEC 5 5 5 4 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 108