| 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) | 3/23/26 | 77.7 2.6 | 1553 | 52.5 2.3 | 0643 | 30.0 8.8 | 28 | 50 15 | 13 0 | 5.0 | 22.8 3.8 | 2024 | WSW | 252 | 0.00 | 36.97 | - | - | 80 20 |
| Rockpile Upper (Cooley) | 3/23/26 | 73.6 2.3 | 1416 | 51.7 4.8 | 0525 | 28.6 9.3 | 30 | 50 19 | 13 3 | 11.4 | 30.5 3.7 | 2035 | NW | 322 | 0.00 | 37.66 | 0.229 0.021 | 539 11 | 60 60 |
| Cloverdale-East (Ranch 83) | 3/23/26 | 84.0 2.1 | 1453 | 45.2 5.2 | 0518 | 37.7 6.2 | - | - | - | 4.3 | 18.6 0.7 | 0856 | NNE | 30 | 0.00 | 30.99 | 0.181 0.021 | 482 11 | 20 20 |
| Cloverdale-SE (Ranch 38) | 3/23/26 | 82.7 2.2 | 1454 | 50.1 1.9 | 0538 | 38.2 7.2 | 41 | 77 6 | 9 15 | 5.6 | 21.6 4.4 | 1513 | N | 1 | 0.00 | 32.45 | 0.189 0.024 | 455 14 | 60 60 |
| Geyserville-North (Hoffman) | 3/23/26 | 87.3 1.2 | 1515 | 41.6 4.2 | 0651 | 42.0 4.9 | 56 | 96 4 | 19 11 | 2.2 | 12.9 1.2 | 1617 | WNW | 285 | 0.00 | 25.50 | 0.150 0.006 | 442 5 | 20 20 |
| Geyserville (Ranch 3) | 3/23/26 | 84.3 0.9 | 1608 | 43.6 4.9 | 0716 | 41.1 4.3 | 55 | 100 10 | 15 10 | 2.8 | 14.6 1.8 | 1645 | NW | 304 | 0.00 | 31.63 | 0.163 0.006 | 463 9 | 50 20 |
| Geyserville-East (Ranch 40) | 3/23/26 | 85.2 0.9 | 1559 | 48.5 0.5 | 0706 | 41.7 5.5 | 49 | 89 6 | 20 10 | 3.8 | 17.0 0.7 | 1650 | NW | 324 | 0.00 | 32.10 | 0.174 0.008 | 492 6 | 50 20 |
| Geyserville-South (Nervo Station) | 3/23/26 | 84.8 2.4 | 1530 | 45.5 2.5 | 0716 | - | - | - | - | 2.1 | 17.5 3.4 | 1606 | W | 274 | 0.00 | 24.64 | - | - | 50 20 |
| Jimtown-North (Piccolo Ranch 15) | 3/23/26 | 83.9 0.1 | 1557 | 41.5 1.3 | 0654 | 42.0 2.9 | 61 | 100 0 | 15 8 | 1.4 | 13.4 3.5 | 1659 | WNW | 289 | 0.00 | 29.34 | 0.133 0.003 | 432 2 | 80 20 |
| HWY 128/Chalk Hill Rd (Landslide) | 3/23/26 | 85.0 0.9 | 1520 | 41.4 1.6 | 0655 | 43.6 3.0 | 66 | 100 5 | 19 4 | 1.7 | 13.1 2.4 | 1621 | SSE | 165 | 0.00 | 28.06 | 0.141 0.012 | 420 9 | 70 20 |
| N Chalk Hill Rd (Ranch 63) | 3/23/26 | 82.1 0.1 | 1554 | 39.4 1.1 | 0711 | 42.2 3.4 | 64 | 100 0 | 19 8 | 1.0 | 14.7 6.2 | 1628 | S | 175 | 0.00 | 29.61 | 0.130 0.009 | 433 12 | 70 20 |
| Knights Valley (Bavarian Lion) | 3/23/26 | 81.9 1.3 | 1553 | 39.5 1.5 | 0720 | 41.5 3.1 | 64 | 98 1 | 17 1 | 2.3 | 13.1 1.7 | 1631 | W | 264 | 0.00 | 27.72 | 0.151 0.010 | 472 4 | 30 20 |
| Upper Dry Creek Valley | 3/23/26 | 84.7 0.8 | 1605 | 41.6 3.7 | 0643 | 39.4 6.2 | 53 | 97 2 | 15 9 | 2.6 | 16.8 1.1 | 1516 | WNW | 283 | 0.00 | 34.53 | 0.171 0.011 | 509 10 | 60 20 |
| Lower Dry Creek Valley | 3/23/26 | 84.8 1.3 | 1526 | 41.7 1.6 | 0701 | 42.5 2.9 | 62 | 100 0 | 16 10 | 1.8 | 18.5 6.2 | 1551 | N | 355 | 0.00 | 33.46 | 0.156 0.005 | 465 7 | 50 20 |
| Max | 87.3 | - | 52.5 | - | 43.6 | 66 | 100 | 20 | 11.4 | 30.5 | - | - | 0.00 | 37.66 | 0.229 | 539 | - | |
| Avg | - | - | - | - | 39.3 | 53 | - | - | 3.4 | - | - | - | - | - | - | - | - | |
| Min | 73.6 | - | 39.4 | - | 28.6 | 28 | 50 | 9 | 1.0 | 12.9 | - | - | 0.00 | 24.64 | 0.130 | 420 | - |
| 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) | 3/23/26 | 83.2 0.9 | 1514 | 44.7 1.4 | 0631 | 45.4 2.5 | 63 | 87 2 | 24 11 | 0.9 | 10.9 0.9 | 1758 | 0.00 | 29.12 | 0.143 0.002 | 492 5 | 70 |
| Windsor-East (Ranch 16) | 3/23/26 | 81.1 0.6 | 1437 | 40.9 0.5 | 0451 | 42.9 2.9 | 66 | 100 3 | 19 11 | 1.9 | 12.3 1.2 | 1627 | 0.00 | 21.96 | 0.159 0.010 | 495 15 | 50 |
| Mark West-North (Ranch 14) | 3/23/26 | 81.1 1.3 | 1456 | 42.4 0.2 | 0636 | 43.1 2.8 | 63 | 97 1 | 16 11 | 1.1 | 9.4 0.5 | 1517 | 0.00 | 23.74 | 0.027 0.005 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 3/23/26 | 80.8 1.2 | 1537 | 41.2 0.1 | 0618 | 43.4 2.7 | 68 | 100 2 | 17 13 | 1.6 | 12.2 0.5 | 1757 | 0.00 | 21.14 | 0.150 0.009 | 490 16 | 0 |
| Fulton-NW (Ranch 5) | 3/23/26 | 79.2 0.9 | 1621 | 41.2 0.4 | 0649 | 41.6 4.7 | 64 | 100 3 | 3 28 | 1.9 | 12.5 0.8 | 1531 | 0.00 | 23.97 | 0.157 0.012 | 500 18 | 0 |
| 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) | 3/23/26 | 79.5 0.1 | 1441 | 42.6 1.2 | 0549 | 43.7 2.6 | 63 | 95 1 | 26 5 | 1.9 | 12.7 1.0 | 1757 | 0.00 | 23.01 | - | - | 0 |
| Fulton-SW (Ranch 21) | 3/23/26 | 78.5 0.8 | 1420 | 40.9 0.9 | 0648 | 36.5 9.2 | 60 | 100 0 | 0 0 | 2.0 | 13.2 2.0 | 1748 | 0.00 | 23.44 | 0.162 0.013 | 530 20 | 0 |
| NW Santa Rosa (Piner Road) | 3/23/26 | 79.8 1.7 | 1550 | 41.2 0.1 | 0645 | 46.2 2.6 | 74 | 100 0 | 20 24 | 1.6 | 11.4 0.8 | 1737 | 0.00 | 21.90 | - | - | 0 |
| River Rd South (Denner Ranch) | 3/23/26 | 78.5 1.0 | 1350 | 40.2 0.6 | 0646 | 42.0 5.2 | 68 | 100 0 | 0 0 | 2.4 | 14.7 2.6 | 1607 | - | - | - | - | 0 |
| West Santa Rosa (LOV Vineyard) | 3/23/26 | 79.0 1.6 | 1522 | 42.1 0.4 | 0640 | 44.0 2.7 | 68 | 100 2 | 16 20 | 1.3 | 11.0 0.3 | 1619 | 0.00 | 16.83 | 0.031 0.009 | 12 12 | 0 |
| Guerneville Rd (Prokopakis) | 3/23/26 | 82.2 1.7 | 1512 | 43.1 0.1 | 0715 | 44.5 2.7 | 67 | 99 2 | 14 20 | - | - | - | 0.00 | 23.04 | - | - | 0 |
| Guerneville Rd West (Balletto) | 3/23/26 | 79.3 1.8 | 1600 | 41.9 0.9 | 0511 | 45.5 2.2 | 71 | 100 0 | 19 23 | 1.9 | 11.4 0.4 | 1614 | 0.00 | 22.55 | - | - | 0 |
| Sanchietti Ranch | 3/23/26 | 78.0 0.7 | 1451 | 42.6 0.8 | 0545 | 47.3 1.5 | - | 99 1 | 25 20 | 2.4 | 12.8 0.4 | 1803 | 0.00 | 23.50 | - | - | 0 |
| Occidental Rd (Sebastopol) | 3/23/26 | 79.0 1.8 | 1509 | 40.8 0.2 | 0522 | 50.1 1.5 | 84 | 100 0 | 26 22 | 1.7 | 12.9 2.4 | 1629 | 0.00 | 6.96 | - | - | 0 |
| Lower Westside Rd (Ranch 12) | 3/23/26 | 82.3 0.6 | 1524 | 41.9 0.3 | 0659 | 44.4 2.2 | 67 | 100 4 | 16 14 | 1.2 | 9.5 0.5 | 1450 | 0.00 | 28.30 | - | - | 70 |
| Guerneville (Laughlin Rd) | 3/23/26 | 78.4 5.3 | 1308 | 42.4 1.9 | 0434 | 43.4 1.5 | 67 | 98 0 | 20 1 | 1.6 | 13.4 1.3 | 1521 | 0.00 | 39.24 | - | - | 0 |
| Korbel (Winery) | 3/23/26 | 80.2 2.8 | 1446 | 44.9 1.7 | 0458 | 45.5 1.7 | 68 | 100 2 | 19 10 | 1.0 | 10.5 2.5 | 1448 | 0.00 | 36.61 | - | - | 60 |
| Forestville (Shone Farms) | 3/23/26 | 83.0 2.5 | 1532 | 42.8 0.8 | 0641 | 43.8 3.4 | 64 | 97 2 | 16 22 | 1.9 | 10.6 0.4 | 1452 | 0.00 | 30.31 | 0.150 0.008 | 476 13 | 0 |
| Forestville-NE (Ranch 30) | 3/23/26 | 81.8 2.5 | 1642 | 41.2 1.1 | 0649 | 45.7 2.9 | 70 | 99 1 | 22 17 | 1.9 | 12.2 0.7 | 1438 | 0.00 | 28.46 | 0.152 0.008 | 490 15 | 70 |
| Green Valley Vineyard | 3/23/26 | 78.8 1.6 | 1429 | 43.4 0.6 | 0716 | 43.2 4.6 | 64 | 98 2 | 13 28 | 2.2 | 17.5 7.7 | 1526 | 0.00 | 35.04 | 0.065 0.031 | 82 30 | 0 |
| Green Valley (Sanchietti) | 3/23/26 | 81.7 2.2 | 1514 | 39.7 0.4 | 0708 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| Keefer Ranch (Green Valley) | 3/23/26 | 80.1 2.0 | 1415 | 40.4 0.0 | 0714 | 43.8 3.8 | 70 | 99 0 | 17 28 | - | - | - | 0.00 | 31.31 | - | - | 0 |
| Graton-South (Mill Station Rd) | 3/23/26 | 76.2 2.5 | 1550 | 39.1 0.5 | 0722 | 44.2 2.7 | 63 | 99 0 | 16 26 | 0.8 | 8.6 0.7 | 1612 | 0.00 | 27.62 | - | - | 0 |
| Occidental (Horseshoe Bend) | 3/23/26 | 76.9 5.3 | 1355 | 48.2 0.9 | 0150 | 42.1 4.5 | - | 97 2 | 11 31 | - | - | - | 0.00 | 32.02 | - | - | 90 |
| Sexton Valley (Jacqueline's Blk) | 3/23/26 | 75.9 2.0 | 1500 | 40.4 1.2 | 0700 | 45.6 2.1 | 73 | 99 0 | 20 24 | 1.5 | 11.5 0.2 | 1328 | 0.00 | 15.31 | - | - | 0 |
| Sebastopol Hills (Burnside Rd) | 3/23/26 | 73.1 2.8 | 1608 | 46.1 1.8 | 0633 | 45.1 2.7 | 64 | 98 4 | 25 25 | 2.3 | 13.8 0.0 | 1528 | 0.00 | 27.89 | - | - | 0 |
| Seaview/Fort Ross (Hirsch) | 3/23/26 | 71.9 3.5 | 1400 | 55.5 3.0 | 0638 | 27.7 12.5 | 28 | 46 13 | 11 17 | 4.1 | 20.3 6.8 | 0124 | 0.00 | 48.40 | 0.178 0.021 | 532 14 | 80 |
| Max | 83.2 | - | 55.5 | - | 50.1 | 84 | 100 | 26 | 4.1 | 20.3 | - | 0.00 | 48.40 | 0.178 | 532 | - | |
| Avg | - | - | - | - | 43.5 | 66 | - | - | 1.8 | - | - | - | - | - | - | - | |
| Min | 71.9 | - | 39.1 | - | 27.7 | 28 | 46 | 0 | 0.8 | 8.6 | - | 0.00 | 6.96 | 0.027 | 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 | 3/23/26 | 76.8 1.0 | 1443 | 51.5 2.9 | 0745 | 36.2 9.0 | 68 9 | 13 15 | 2.8 0.8 | 10.7 1.5 | 1450 | SSE | 167 | 0.00 | 5.41 | 0.162 0.015 | 519 15 | 0 0 |
| Lower Bennett Valley | 3/23/26 | 77.2 1.4 | 1357 | 38.1 0.2 | 0438 | 42.4 4.0 | 100 0 | 14 16 | 1.9 0.2 | 16.0 4.5 | 1634 | SE | 125 | 0.00 | 22.06 | 0.149 0.006 | 488 10 | 0 0 |
| Kenwood (Wildwood) | 3/23/26 | 78.4 3.4 | 1417 | 44.5 2.5 | 0738 | 42.8 4.7 | 96 0 | 14 15 | 3.4 0.8 | 15.6 4.1 | 1530 | N | 7 | 0.00 | 26.90 | 0.149 0.009 | 452 10 | 90 20 |
| Sonoma Valley (Bedrock) | 3/23/26 | 79.5 2.5 | 1416 | 41.7 0.1 | 0723 | 40.4 5.2 | 97 3 | 18 11 | - | - | - | - | 0.00 | 23.11 | - | - | 100 0 |
| Sonoma-West (Arnold) | 3/23/26 | 79.4 3.3 | 1327 | 39.8 0.5 | 0623 | 40.4 6.0 | 100 2 | 14 18 | 2.6 0.8 | 17.9 5.8 | 1554 | SW | 230 | 0.00 | 17.20 | 0.182 0.013 | 570 14 | 90 20 |
| Sonoma Valley HS | 3/23/26 | 78.3 1.3 | 1433 | 44.6 1.8 | 0716 | 43.9 5.4 | 100 0 | 15 24 | 1.7 0.3 | 11.0 1.7 | 1727 | SSW | 206 | 0.00 | 5.29 | 0.154 0.011 | 516 14 | 60 20 |
| Sonoma East (Bundschu01) | 3/23/26 | 77.6 1.8 | 1428 | 43.5 2.0 | 0720 | 41.3 5.9 | 94 4 | 15 23 | 3.0 0.5 | 20.4 9.9 | 1650 | W | 270 | 0.00 | 17.48 | 0.167 0.015 | 529 12 | 60 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) | 3/23/26 | 79.3 2.2 | 1444 | 42.8 1.2 | 0725 | 41.1 6.2 | 94 1 | 14 23 | 2.0 0.9 | 17.2 7.7 | 1643 | W | 270 | 0.00 | 14.95 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 3/23/26 | 78.3 0.8 | 1440 | 42.8 0.7 | 0650 | 41.4 6.2 | 97 1 | 15 27 | 4.3 1.2 | 20.3 7.8 | 1647 | W | 275 | 0.00 | 18.75 | 0.188 0.034 | 546 20 | 0 0 |
| Carneros (Ranch 71) | 3/23/26 | 76.7 0.4 | 1450 | 48.1 0.1 | 0634 | 40.0 7.6 | 88 1 | 14 28 | 4.6 1.7 | 23.3 5.3 | 1639 | W | 278 | 0.00 | 16.20 | 0.190 0.040 | 528 16 | 30 10 |
| Carneros Upper (Ranch 81) | 3/23/26 | 78.2 1.3 | 1457 | 48.4 1.4 | 0652 | 38.9 8.3 | - | - | 6.1 0.6 | 28.1 8.3 | 1647 | WSW | 257 | - | - | - | - | 100 10 |
| Carneros Lower (Ranch 81) | 3/23/26 | 83.1 4.4 | 1457 | 43.9 0.9 | 0612 | 40.8 5.9 | 100 0 | 0 0 | 1.1 0.3 | 11.8 1.4 | 1656 | WSW | 257 | 0.00 | 16.94 | 0.122 0.005 | 401 4 | 0 0 |
| Rohnert Park-West (Stony Point) | 3/23/26 | 72.4 0.2 | 1341 | 38.5 0.0 | 0651 | 45.0 1.8 | 99 0 | 33 16 | 1.7 0.2 | 15.9 2.0 | 1547 | WSW | 245 | 0.00 | 6.33 | - | - | 0 0 |
| Cartograph Wines Base | 3/23/26 | 69.8 0.9 | 1326 | 43.9 2.0 | 0655 | 46.0 2.2 | 99 4 | 35 21 | 3.0 0.0 | 21.7 0.0 | 1531 | SSW | 212 | 0.00 | 22.43 | 0.141 0.012 | 506 8 | 0 0 |
| Cartograph Wines Remote | 3/23/26 | 74.4 0.2 | 1223 | 40.0 0.1 | 0715 | - | - | - | - | - | - | - | - | - | - | - | 40 10 |
| Rice-Spivak Vineyard | 3/23/26 | 70.9 0.2 | 1345 | 33.5 0.1 | 0703 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Penngrove (Asellus) | 3/23/26 | 74.2 2.4 | 1350 | 39.3 0.2 | 0729 | 42.5 3.1 | 98 0 | 26 10 | 2.1 0.3 | 9.4 1.1 | 1427 | SSW | 201 | 0.00 | 45.71 | - | - | 0 0 |
| Petaluma (Ranch 10) | 3/23/26 | 79.2 2.1 | 1420 | 40.5 1.5 | 0707 | 38.4 7.1 | 100 0 | 8 27 | 1.9 0.2 | 14.6 1.5 | 1433 | NW | 316 | 0.00 | 15.67 | 0.161 0.018 | 483 21 | 60 20 |
| Max | 83.1 | - | 51.5 | - | 46.0 | 100 | 35 | 6.1 | 28.1 | - | - | 0.00 | 45.71 | 0.190 | 570 | - | |
| Avg | - | - | - | - | 41.3 | - | - | 2.8 | - | - | - | - | - | - | - | - | |
| Min | 69.8 | - | 33.5 | - | 36.2 | 68 | 0 | 1.1 | 9.4 | - | - | 0.00 | 5.29 | 0.122 | 401 | - |