| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | RH (%) | Daily Max RH (%) | Daily Min RH (%) | Wind Spd (mph) | Daily Max Wind (mph) | Time of Max Wind | Max Wind Dir (°) | Daily Rain (In) | Season Precip (In) | Daily ETo (in) | Daily Solar Rad (Cal/cm2) | Powdery Mildew Stress (pts) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rockpile Lower (Cooley) | 3/28/26 | 86.5 0.8 | 1520 | 57.0 3.7 | 0650 | 33.8 2.9 | 28 | 43 9 | 14 4 | 2.7 | 15.3 4.1 | 1616 | W | 275 | 0.00 | 36.97 | - | - | 90 10 |
| Rockpile Upper (Cooley) | 3/28/26 | 81.2 0.5 | 1437 | 57.7 1.8 | 0610 | 33.2 5.7 | 28 | 45 1 | 12 1 | 7.6 | 20.8 1.1 | 1544 | NNW | 338 | 0.00 | 37.66 | 0.238 0.023 | 568 31 | 100 0 |
| Cloverdale-East (Ranch 83) | 3/28/26 | 90.5 1.6 | 1555 | 46.9 1.3 | 0127 | 42.2 3.4 | - | - | - | 4.6 | 18.0 3.4 | 0936 | NNE | 12 | 0.00 | 30.99 | 0.188 0.009 | 516 34 | 60 10 |
| Cloverdale-SE (Ranch 38) | 3/28/26 | 89.8 2.0 | 1601 | 48.3 4.0 | 0729 | 43.0 4.4 | 44 | 66 6 | 19 4 | 5.1 | 20.7 0.8 | 0842 | NW | 316 | 0.00 | 32.45 | 0.185 0.009 | 476 14 | 80 10 |
| Geyserville-North (Hoffman) | 3/28/26 | 91.4 2.1 | 1446 | 37.8 4.9 | 0715 | 45.2 3.7 | 61 | 94 5 | 20 5 | 1.8 | 12.1 1.5 | 1658 | SE | 146 | 0.00 | 25.50 | 0.161 0.005 | 486 16 | 0 10 |
| Geyserville (Ranch 3) | 3/28/26 | 88.0 0.5 | 1540 | 40.0 5.5 | 0634 | 43.1 3.8 | 55 | 92 5 | 17 5 | 2.1 | 11.8 0.3 | 1706 | SE | 132 | 0.00 | 31.63 | 0.165 0.001 | 496 7 | 60 10 |
| Geyserville-East (Ranch 40) | 3/28/26 | 87.8 0.2 | 1509 | 47.6 3.7 | 0721 | 43.6 3.5 | 46 | 66 1 | 21 8 | 3.3 | 16.9 0.4 | 1703 | SSW | 198 | 0.00 | 32.10 | 0.183 0.003 | 533 10 | 60 10 |
| Geyserville-South (Nervo Station) | 3/28/26 | 85.1 1.5 | 1548 | 44.0 3.6 | 0708 | - | - | - | - | 1.9 | 10.1 0.0 | 1638 | SSE | 161 | 0.00 | 24.64 | - | - | 90 20 |
| Jimtown-North (Piccolo Ranch 15) | 3/28/26 | 85.9 1.9 | 1540 | 38.2 2.3 | 0712 | 42.3 3.1 | 59 | 100 8 | 19 6 | 1.3 | 10.3 0.9 | 1656 | SSW | 206 | 0.00 | 29.34 | 0.139 0.001 | 454 10 | 100 10 |
| HWY 128/Chalk Hill Rd (Landslide) | 3/28/26 | 85.6 2.8 | 1601 | 38.5 1.8 | 0736 | 44.1 2.5 | 65 | 98 0 | 22 7 | 1.6 | 11.2 0.5 | 1721 | S | 181 | 0.00 | 28.06 | 0.147 0.004 | 453 26 | 80 10 |
| N Chalk Hill Rd (Ranch 63) | 3/28/26 | 85.2 1.3 | 1537 | 36.5 2.3 | 0654 | 42.9 2.2 | 64 | 100 0 | 20 6 | 1.6 | 12.1 0.1 | 1703 | S | 169 | 0.00 | 29.61 | 0.148 0.006 | 461 22 | 80 10 |
| Knights Valley (Bavarian Lion) | 3/28/26 | 84.4 0.7 | 1541 | 36.4 3.3 | 0718 | 43.5 3.8 | 65 | 97 5 | 22 7 | 2.3 | 10.6 1.4 | 1311 | N | 350 | 0.00 | 27.72 | 0.162 0.005 | 518 34 | 100 0 |
| Upper Dry Creek Valley | 3/28/26 | 89.6 0.1 | 1548 | 38.9 4.0 | 0634 | 43.0 2.5 | 58 | 93 0 | 14 5 | 1.9 | 12.1 0.4 | 1721 | SE | 140 | 0.00 | 34.53 | 0.175 0.013 | 548 27 | 90 10 |
| Lower Dry Creek Valley | 3/28/26 | 86.3 3.9 | 1552 | 38.2 2.2 | 0648 | 43.6 3.9 | 61 | 100 0 | 19 8 | 1.4 | 13.1 2.1 | 1715 | SE | 126 | 0.00 | 33.46 | 0.159 0.006 | 488 4 | 60 10 |
| Max | 91.4 | - | 57.7 | - | 45.2 | 65 | 100 | 22 | 7.6 | 20.8 | - | - | 0.00 | 37.66 | 0.238 | 568 | - | |
| Avg | - | - | - | - | 41.8 | 53 | - | - | 2.8 | - | - | - | - | - | - | - | - | |
| Min | 81.2 | - | 36.4 | - | 33.2 | 28 | 43 | 12 | 1.3 | 10.1 | - | - | 0.00 | 24.64 | 0.139 | 453 | - |
| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | RH (%) | Daily Max RH (%) | Daily Min RH (%) | Wind Spd (mph) | Daily Max Wind (mph) | Time of Max Wind | Daily Rain (In) | Season Precip (In) | Daily ETo (in) | Daily Solar Rad (Cal/cm2) | Powdery Mildew Stress (pts) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Windsor-NW (Ranch 8) | 3/28/26 | 86.5 2.0 | 1534 | 42.0 3.0 | 0659 | 46.4 2.0 | 62 | 85 1 | 25 7 | 0.5 | 9.6 0.2 | 1701 | 0.00 | 29.12 | 0.151 0.001 | 530 32 | 50 |
| Windsor-East (Ranch 16) | 3/28/26 | 83.4 4.6 | 1448 | 37.1 3.0 | 0703 | 42.4 2.2 | 63 | 97 3 | 19 8 | 1.6 | 11.6 2.0 | 1653 | 0.00 | 21.96 | 0.163 0.002 | 525 33 | 100 |
| Mark West-North (Ranch 14) | 3/28/26 | 82.9 4.3 | 1521 | 39.8 1.8 | 0701 | 43.3 2.6 | 60 | 96 1 | 22 11 | 1.1 | 9.2 0.3 | 1642 | 0.00 | 23.74 | 0.025 0.001 | 0 0 | 60 |
| Windsor-SE (Silk Rd) | 3/28/26 | 82.9 3.8 | 1515 | 36.8 3.4 | 0701 | 43.8 3.1 | 67 | 98 0 | 20 7 | 1.3 | 11.1 1.4 | 1546 | 0.00 | 21.14 | 0.155 0.001 | 518 35 | 100 |
| Fulton-NW (Ranch 5) | 3/28/26 | 81.0 4.1 | 1521 | 37.6 3.1 | 0713 | 43.7 2.4 | 66 | 100 3 | 3 10 | 1.6 | 11.5 0.8 | 1627 | 0.00 | 23.97 | 0.158 0.004 | 513 20 | 100 |
| Windsor-South (Laughlin Rd) | 2/27/26 | 81.3 4.8 | 1431 | 49.4 1.9 | 0637 | 53.1 42.4 | 74 | 100 0 | 0 0 | - | - | - | 0.00 | 24.07 | - | - | - |
| Fulton-SE (Barnes Rd) | 3/28/26 | 81.0 3.5 | 1546 | 39.9 2.8 | 0709 | 43.9 1.5 | 61 | 93 0 | 24 6 | 1.6 | 10.6 1.2 | 1623 | 0.00 | 23.01 | - | - | 100 |
| Fulton-SW (Ranch 21) | 3/28/26 | 80.0 4.3 | 1435 | 37.7 3.2 | 0631 | 39.9 2.4 | 64 | 100 5 | 0 15 | 1.9 | 12.3 1.2 | 1506 | 0.00 | 23.44 | 0.165 0.005 | 554 20 | 0 |
| NW Santa Rosa (Piner Road) | 3/28/26 | 80.0 5.2 | 1436 | 38.0 2.4 | 0646 | 47.2 2.0 | 75 | 100 0 | 30 10 | 1.4 | 10.7 3.4 | 1543 | 0.00 | 21.90 | - | - | 0 |
| River Rd South (Denner Ranch) | 3/28/26 | 80.4 6.6 | 1424 | 36.2 3.1 | 0708 | 22.9 13.7 | 53 | 100 0 | 0 0 | 2.3 | 12.7 2.8 | 1706 | - | - | - | - | 80 |
| West Santa Rosa (LOV Vineyard) | 3/28/26 | 79.2 5.2 | 1428 | 38.5 2.4 | 0702 | 45.4 2.7 | 70 | 98 2 | 25 12 | 1.1 | 11.0 1.8 | 1536 | 0.00 | 16.83 | 0.023 0.013 | 1 2 | 90 |
| Guerneville Rd (Prokopakis) | 3/28/26 | 81.7 4.0 | 1523 | 39.3 2.6 | 0655 | 45.8 3.5 | 68 | 98 1 | 26 11 | - | - | - | 0.00 | 23.06 | - | - | 100 |
| Guerneville Rd West (Balletto) | 3/28/26 | 80.7 3.8 | 1424 | 36.5 3.2 | 0644 | 46.0 2.4 | 72 | 99 1 | 31 13 | 1.7 | 9.8 3.5 | 1553 | 0.00 | 22.55 | - | - | 0 |
| Sanchietti Ranch | 3/28/26 | 78.5 5.2 | 1400 | 38.7 2.2 | 0714 | 47.8 1.4 | - | 98 1 | 34 7 | 2.0 | 10.4 1.8 | 1413 | 0.00 | 23.50 | - | - | 0 |
| Occidental Rd (Sebastopol) | 3/28/26 | 79.8 4.4 | 1415 | 36.7 2.5 | 0657 | 50.1 1.8 | 84 | 100 0 | 41 13 | 1.6 | 11.4 2.4 | 1546 | 0.00 | 6.96 | - | - | 0 |
| Lower Westside Rd (Ranch 12) | 3/28/26 | 83.6 4.0 | 1449 | 37.4 3.8 | 0720 | 44.7 3.9 | 66 | 96 1 | 21 9 | 1.4 | 9.4 2.3 | 1641 | 0.00 | 28.30 | - | - | 100 |
| Guerneville (Laughlin Rd) | 3/28/26 | 82.8 2.8 | 1339 | 35.6 3.4 | 0655 | 41.6 1.5 | 65 | 97 0 | 16 2 | 1.4 | 12.7 1.1 | 1524 | 0.00 | 39.24 | - | - | 100 |
| Korbel (Winery) | 3/28/26 | 84.1 1.0 | 1409 | 39.2 2.7 | 0704 | 43.5 2.5 | 64 | 97 1 | 18 3 | 0.9 | 13.2 3.2 | 1549 | 0.00 | 36.61 | - | - | 100 |
| Forestville (Shone Farms) | 3/28/26 | 84.0 2.8 | 1549 | 39.8 3.2 | 0712 | 44.7 4.3 | 62 | 94 3 | 17 3 | 1.7 | 10.0 3.2 | 1523 | 0.00 | 30.31 | 0.156 0.003 | 506 40 | 100 |
| Forestville-NE (Ranch 30) | 3/28/26 | 82.9 3.3 | 1455 | 38.2 3.7 | 0616 | 46.8 3.3 | 70 | 99 2 | 25 6 | 1.8 | 10.5 2.3 | 1743 | 0.00 | 28.46 | 0.161 0.004 | 518 35 | 100 |
| Green Valley Vineyard | 3/28/26 | 81.8 1.4 | 1653 | 40.2 3.9 | 0707 | 45.0 5.5 | 62 | 94 7 | 24 11 | 1.8 | 11.0 3.9 | 1612 | 0.00 | 35.04 | 0.030 0.016 | 8 2 | 100 |
| Green Valley (Sanchietti) | 3/28/26 | 82.4 4.2 | 1630 | 33.8 4.2 | 0713 | - | - | - | - | - | - | - | - | - | - | - | 100 |
| Keefer Ranch (Green Valley) | 3/28/26 | 80.9 3.5 | 1530 | 35.9 3.4 | 0726 | 46.0 4.3 | 72 | 98 0 | 28 11 | - | - | - | 0.00 | 31.31 | - | - | 100 |
| Graton-South (Mill Station Rd) | 3/28/26 | 77.4 4.5 | 1323 | 35.6 2.8 | 0721 | 44.8 2.4 | 73 | 98 1 | 26 8 | 0.6 | 8.3 0.1 | 1628 | 0.00 | 27.62 | - | - | 100 |
| Occidental (Horseshoe Bend) | 3/28/26 | 74.1 7.5 | 1309 | 47.1 1.9 | 0338 | 44.3 4.8 | - | 79 6 | 32 15 | - | - | - | 0.00 | 32.10 | - | - | 100 |
| Sexton Valley (Jacqueline's Blk) | 3/28/26 | 75.4 5.9 | 1333 | 37.6 3.2 | 0721 | 47.0 2.4 | 76 | 100 0 | 36 13 | 1.4 | 9.5 1.6 | 1541 | 0.00 | 15.31 | - | - | 90 |
| Sebastopol Hills (Burnside Rd) | 3/28/26 | 73.2 5.4 | 1240 | 45.6 4.0 | 0703 | 46.8 2.3 | 64 | 88 1 | 38 16 | 2.2 | 13.5 0.4 | 1614 | 0.00 | 27.89 | - | - | 0 |
| Seaview/Fort Ross (Hirsch) | 3/28/26 | 78.3 3.3 | 1716 | 59.2 4.5 | 0616 | 34.3 7.0 | 30 | 48 10 | 14 5 | 2.5 | 8.3 0.4 | 2018 | 0.00 | 48.40 | 0.174 0.008 | 559 24 | 60 |
| Max | 86.5 | - | 59.2 | - | 50.1 | 84 | 100 | 41 | 2.5 | 13.5 | - | 0.00 | 48.40 | 0.174 | 559 | - | |
| Avg | - | - | - | - | 43.8 | 65 | - | - | 1.5 | - | - | - | - | - | - | - | |
| Min | 73.2 | - | 33.8 | - | 22.9 | 30 | 48 | 0 | 0.5 | 8.3 | - | 0.00 | 6.96 | 0.023 | 0 | - |
| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | Daily Max RH (%) | Daily Min RH (%) | Wind Spd (mph) | Daily Max Wind (mph) | Time of Max Wind | Max Wind Dir (°) | Daily Rain (In) | Season Precip (In) | Daily ETo (in) | Daily Solar Rad (Cal/cm2) | Powdery Mildew Stress (pts) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Upper Rincon Valley | 3/28/26 | 79.1 2.0 | 1624 | 50.2 4.9 | 0737 | 40.6 5.9 | 64 16 | 25 8 | 2.7 0.0 | 8.5 2.9 | 1606 | SSE | 161 | 0.00 | 5.41 | 0.165 0.003 | 538 20 | 70 20 |
| Lower Bennett Valley | 3/28/26 | 80.2 1.7 | 1502 | 34.9 3.0 | 0720 | 45.1 2.7 | 100 0 | 33 12 | 1.8 0.2 | 9.6 3.4 | 1316 | NNW | 338 | 0.00 | 22.06 | 0.152 0.002 | 506 31 | 0 0 |
| Kenwood (Wildwood) | 3/28/26 | 81.4 3.1 | 1504 | 39.9 1.9 | 0716 | 45.2 4.2 | 95 4 | 31 12 | 2.7 0.1 | 8.2 7.5 | 1624 | NNW | 348 | 0.00 | 26.90 | 0.147 0.000 | 473 38 | 100 0 |
| Sonoma Valley (Bedrock) | 3/28/26 | 81.9 0.5 | 1623 | 38.3 2.8 | 0725 | 43.5 4.9 | 91 2 | 30 13 | - | - | - | - | 0.00 | 23.11 | - | - | 100 0 |
| Sonoma-West (Arnold) | 3/28/26 | 83.2 1.1 | 1516 | 36.9 2.7 | 0641 | 44.6 3.7 | 94 0 | 27 10 | 1.9 0.1 | 10.7 3.5 | 1538 | SSW | 202 | 0.00 | 17.20 | 0.178 0.005 | 587 53 | 100 0 |
| Sonoma Valley HS | 3/28/26 | 81.3 0.5 | 1631 | 40.2 2.2 | 0722 | 48.4 3.5 | 100 0 | 35 10 | 1.1 0.1 | 7.6 1.1 | 1730 | SSW | 202 | 0.00 | 5.29 | 0.152 0.001 | 530 33 | 100 20 |
| Sonoma East (Bundschu01) | 3/28/26 | 80.6 0.4 | 1523 | 38.4 1.6 | 0658 | 46.1 3.6 | 93 1 | 36 15 | 1.9 0.1 | 9.4 3.3 | 1320 | S | 177 | 0.00 | 17.48 | 0.159 0.007 | 537 10 | 100 20 |
| Schellville (Sasaki) | 2/4/26 | 70.2 | 1502 | 39.9 | 0001 | 48.4 | 98 | 51 | 2.9 | 11.8 | 1113 | NE | 34 | 0.00 | 0.00 | - | - | 0 |
| Sonoma-SE (Napoli) | 3/28/26 | 83.0 0.3 | 1456 | 38.4 1.7 | 0721 | 45.7 3.1 | 94 1 | 32 12 | 1.1 0.1 | 9.1 2.3 | 1612 | SSW | 210 | 0.00 | 14.95 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 3/28/26 | 81.2 1.9 | 1616 | 38.3 2.7 | 0657 | 45.1 3.4 | 95 0 | 26 6 | 2.6 0.7 | 10.0 5.0 | 1628 | WNW | 300 | 0.00 | 18.75 | 0.166 0.018 | 556 5 | 0 0 |
| Carneros (Ranch 71) | 3/28/26 | 81.2 1.1 | 1609 | 49.2 2.0 | 0611 | 44.9 3.6 | 83 10 | 27 6 | 1.8 0.8 | 10.1 5.3 | 1629 | W | 259 | 0.00 | 16.20 | 0.163 0.008 | 539 19 | 70 20 |
| Carneros Upper (Ranch 81) | 3/28/26 | 82.0 1.1 | 1633 | 51.2 1.7 | 0649 | 44.7 5.0 | - | - | 3.4 0.7 | 11.5 7.5 | 1938 | W | 262 | - | - | - | - | 100 0 |
| Carneros Lower (Ranch 81) | 3/28/26 | 85.5 2.0 | 1628 | 41.6 1.5 | 0628 | 45.7 2.4 | 100 0 | 0 24 | 1.0 0.2 | 8.0 2.6 | 1148 | S | 170 | 0.00 | 16.94 | 0.122 0.006 | 414 10 | 0 0 |
| Rohnert Park-West (Stony Point) | 3/28/26 | 75.9 4.7 | 1326 | 35.1 1.9 | 0719 | 45.6 1.4 | 98 0 | 41 14 | 1.5 0.1 | 11.8 5.9 | 1528 | SW | 219 | 0.00 | 6.33 | - | - | 0 0 |
| Cartograph Wines Base | 3/28/26 | 73.7 6.3 | 1253 | 41.9 4.5 | 0703 | 48.1 2.4 | 99 4 | 44 17 | 2.7 0.6 | 15.7 5.6 | 1502 | SW | 215 | 0.00 | 22.43 | 0.137 0.017 | 525 40 | 0 0 |
| Cartograph Wines Remote | 3/28/26 | 76.7 1.3 | 1233 | 38.0 2.9 | 0625 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Rice-Spivak Vineyard | 3/28/26 | 76.8 3.0 | 1245 | 30.6 3.6 | 0706 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Penngrove (Asellus) | 3/28/26 | 78.7 4.2 | 1441 | 36.9 1.1 | 0543 | 43.8 1.5 | 98 1 | 29 8 | 1.5 0.1 | 9.3 0.6 | 1509 | W | 280 | 0.00 | 45.71 | - | - | 0 0 |
| Petaluma (Ranch 10) | 3/28/26 | 82.0 3.8 | 1429 | 36.8 1.2 | 0626 | 44.3 2.8 | 100 5 | 27 8 | 1.3 0.1 | 10.5 2.0 | 1651 | NNW | 331 | 0.00 | 15.67 | 0.152 0.004 | 496 21 | 100 20 |
| Max | 85.5 | - | 51.2 | - | 48.4 | 100 | 44 | 3.4 | 15.7 | - | - | 0.00 | 45.71 | 0.178 | 587 | - | |
| Avg | - | - | - | - | 45.1 | - | - | 1.9 | - | - | - | - | - | - | - | - | |
| Min | 73.7 | - | 30.6 | - | 40.6 | 64 | 0 | 1.0 | 7.6 | - | - | 0.00 | 5.29 | 0.122 | 414 | - |