| Table 2. 1998 Temperature and Precipitation Summary | | | | | | | | | | | |
| | | May | June | July | August | September |
| | Temperature | Average | Departure | Average | Departure | Average | Departure | Average | Departure | Average | Departure |
| Location | Precipitation | Total | Departure | Total | Departure | Total | Departure | Total | Departure | Total | Departure |
| | | | | | | | | | | | |
| Arlington | Temperature | 61.5 | 3.6 | 66.5 | -0.3 | 69.9 | -1.4 | 71.0 | 2.1 | 64.7 | 3.8 |
| | Precipitation | 4.1 | 0.9 | 6.8 | 3.0 | 1.8 | -1.6 | 6.7 | 2.8 | 3.0 | -1.3 |
| | | | | | | | | | | | |
| Ashland* | Temperature | 59.0 | 7.4 | 60.4 | -1.0 | 68.4 | 0.6 | 69.1 | 3.5 | 62.1 | 5.0 |
| | Precipitation | 1.1 | -2.1 | 6.6 | 3.3 | 1.6 | -1.9 | 3.0 | -1.2 | 3.2 | -0.6 |
| | | | | | | | | | | | |
| Chippewa Falls | Temperature | 64.0 | 6.7 | 65.7 | -0.7 | 72.7 | 1.2 | 71.5 | 2.9 | 65.7 | 6.7 |
| (Eau Claire) | Precipitation | 4.1 | 0.3 | 3.8 | -0.4 | 3.6 | -0.4 | 3.6 | -0.9 | 1.3 | -2.6 |
| | | | | | | | | | | | |
| Fond du Lac | Temperature | 62.6 | 5.1 | 66.5 | -0.5 | 71.9 | -0.1 | 70.5 | 1.0 | 66.2 | 4.9 |
| | Precipitation | 2.1 | -0.9 | 4.0 | 0.5 | 0.9 | -2.3 | 2.8 | -1.1 | 2.0 | -1.8 |
| | | | | | | | | | | | |
| Galesville | Temperature | 65.6 | 6.3 | 66.4 | -2.0 | 73.5 | 0.6 | 70.5 | 0.3 | 67.3 | 5.9 |
| (Tremp. Dam #6) | Precipitation | 3.6 | -0.2 | 7.8 | 3.8 | 2.6 | -1.5 | 7.8 | 3.7 | 0.2 | -4.1 |
| | | | | | | | | | | | |
| Hancock** | Temperature | 63.3 | 5.6 | 64.4 | -2.2 | 69.9 | -1.0 | 69.0 | 0.6 | 63.9 | 3.8 |
| | Precipitation | 3.0 | -0.2 | 6.4 | 2.8 | 2.5 | -1.1 | 7.8 | 3.8 | 2.5 | -1.7 |
| | | | | | | | | | | | |
| Janesville | Temperature | 63.6 | 5.4 | 67.6 | -1.1 | 72.3 | -0.4 | 72.1 | 2.2 | 64.7 | 2.7 |
| (Beloit) | Precipitation | 5.0 | 1.9 | 5.7 | 1.9 | 2.7 | -1.2 | 8.6 | 4.6 | 2.8 | -1.2 |
| | | | | | | | | | | | |
| Lancaster | Temperature | 62.8 | 4.5 | 65.8 | -2.0 | 70.9 | -1.1 | 70.6 | 0.9 | 65.1 | 3.6 |
| | Precipitation | 3.7 | 0.1 | 5.5 | 1.5 | 3.0 | -1.0 | 6.4 | 2.0 | 3.3 | -0.6 |
| | | | | | | | | | | | |
| Marshfield | Temperature | 62.3 | 6.3 | 64.0 | -0.6 | 70.6 | 1.3 | 68.7 | 1.9 | 63.6 | 5.4 |
| | Precipitation | 3.1 | -1.0 | 8.6 | 4.5 | 0.5 | -3.5 | 3.2 | -0.9 | 0.6 | -4.0 |
| | | | | | | | | | | | |
| Seymour | Temperature | 60.5 | 5.0 | 64.9 | 0.4 | 69.4 | -0.3 | 69.5 | 2.4 | 63.5 | 4.5 |
| (Green Bay) | Precipitation | 2.2 | -0.6 | 6.2 | 2.8 | 1.9 | -1.2 | 2.9 | -0.6 | 3.5 | 0.1 |
| | | | | | | | | | | | |
| Spooner** | Temperature | 63.5 | 7.6 | 63.6 | -0.9 | 69.9 | 0.4 | 70.5 | 3.9 | 64.9 | 7.3 |
| | Precipitation | 3.4 | 0.2 | 4.4 | 0.6 | 1.8 | -1.9 | 3.3 | -1.0 | 1.6 | -2.2 |
| | | | | | | | | | | | |
| Valders | Temperature | 60.9 | 6.8 | 64.9 | 1.1 | 71.1 | 1.3 | 70.0 | 1.7 | 66.3 | 5.7 |
| (Manitowoc) | Precipitation | 2.3 | -0.5 | 4.6 | 1.5 | 1.9 | -1.2 | 7.0 | 3.7 | 1.8 | -1.6 |
| | | | | | | | | | | | |
| White Lake | Temperature | 59.0 | 5.8 | 60.9 | -1.2 | 65.8 | -1.3 | 66.3 | 2.1 | 61.3 | 6.5 |
| (Antigo) | Precipitation | 1.8 | -1.5 | 5.5 | 1.7 | 0.5 | -3.2 | 3.1 | -1.1 | 3.7 | -0.7 |
| | | | | | | | | | | | |
| | | | | | | | | | | | |
| *Ashland's May data is based on incomplete data. | | | | | | | | | | | |
| **Irrigation applied at Hancock and Spooner - Irrigated Sand Trials. | | | | | | | | | | | |