| 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) | 3/20/26 | 94.6 3.9 | 1609 | 66.7 1.4 | 0037 | 38.5 3.5 | 25 | 44 1 | 11 1 | 2.7 | 14.7 2.9 | 1853 | W | 273 | 0.00 | 36.97 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 3/20/26 | 90.3 4.3 | 1643 | 63.4 2.4 | 0059 | 37.1 4.0 | 26 | 45 4 | 13 4 | 10.4 | 26.3 0.7 | 0044 | NW | 320 | 0.00 | 37.66 | 0.284 0.036 | 560 3 | 0 0 |
| Cloverdale-East (Ranch 83) | 3/20/26 | 95.5 3.3 | 1619 | 56.4 1.5 | 0044 | 46.6 1.9 | - | - | - | 5.6 | 20.5 2.8 | 1107 | N | 354 | 0.00 | 30.99 | 0.206 0.002 | 496 5 | 20 10 |
| Cloverdale-SE (Ranch 38) | 3/20/26 | 92.7 0.8 | 1546 | 60.4 3.9 | 0814 | 47.0 1.9 | 38 | 52 11 | 21 8 | 7.3 | 27.6 8.8 | 0949 | NNW | 337 | 0.00 | 32.45 | 0.221 0.008 | 464 3 | 0 0 |
| Geyserville-North (Hoffman) | 3/20/26 | 96.7 0.7 | 1510 | 47.2 0.1 | 0629 | 50.0 2.9 | 55 | 90 4 | 19 3 | 1.9 | 10.4 0.2 | 0954 | NNW | 332 | 0.00 | 25.50 | 0.162 0.007 | 466 3 | 20 10 |
| Geyserville (Ranch 3) | 3/20/26 | 92.9 0.6 | 1639 | 51.1 0.9 | 0620 | 48.0 3.2 | 49 | 85 5 | 13 1 | 3.0 | 11.5 0.1 | 1010 | WSW | 257 | 0.00 | 31.63 | 0.175 0.002 | 487 4 | 20 10 |
| Geyserville-East (Ranch 40) | 3/20/26 | 92.5 2.6 | 1616 | 60.8 5.5 | 0512 | 49.4 0.8 | 40 | 54 20 | 22 6 | 3.2 | 12.9 0.4 | 1420 | S | 188 | 0.00 | 32.10 | 0.194 0.014 | 508 5 | 20 10 |
| Geyserville-South (Nervo Station) | 3/20/26 | 92.1 1.2 | 1609 | 53.1 2.8 | 0726 | - | - | - | - | 1.4 | 10.1 0.3 | 1008 | WNW | 295 | 0.00 | 24.64 | - | - | 20 10 |
| Jimtown-North (Piccolo Ranch 15) | 3/20/26 | 95.4 1.1 | 1615 | 46.7 0.9 | 0650 | 48.8 0.6 | 59 | 100 0 | 16 0 | 1.0 | 7.9 0.9 | 1617 | SSE | 162 | 0.00 | 29.34 | 0.133 0.003 | 433 12 | 20 10 |
| HWY 128/Chalk Hill Rd (Landslide) | 3/20/26 | 95.3 2.0 | 1703 | 44.8 0.6 | 0739 | 51.1 0.2 | 67 | 98 2 | 18 1 | 1.0 | 7.2 0.5 | 1622 | SE | 128 | 0.00 | 28.06 | 0.145 0.009 | 442 10 | 40 10 |
| N Chalk Hill Rd (Ranch 63) | 3/20/26 | 92.3 0.2 | 1532 | 43.5 1.0 | 0705 | 49.5 0.2 | 65 | 100 0 | 19 2 | 0.9 | 7.1 1.4 | 1711 | S | 186 | 0.00 | 29.61 | 0.145 0.012 | 448 9 | 40 10 |
| Knights Valley (Bavarian Lion) | 3/20/26 | 93.4 1.2 | 1635 | 43.1 0.3 | 0722 | 49.4 0.4 | 67 | 98 0 | 14 4 | 1.7 | 8.3 0.0 | 1323 | NNW | 338 | 0.00 | 27.72 | 0.156 0.006 | 497 10 | 30 10 |
| Upper Dry Creek Valley | 3/20/26 | 92.7 1.7 | 1458 | 48.7 2.6 | 0619 | 49.0 3.1 | 55 | 88 5 | 17 4 | 1.8 | 7.9 0.2 | 1626 | SSE | 152 | 0.00 | 34.53 | 0.173 0.010 | 526 4 | 30 10 |
| Lower Dry Creek Valley | 3/20/26 | 94.0 3.3 | 1548 | 45.3 0.9 | 0707 | 49.8 1.8 | 61 | 100 0 | 17 5 | 1.2 | 11.2 3.5 | 1618 | N | 354 | 0.00 | 33.46 | 0.165 0.018 | 486 3 | 20 10 |
| Max | 96.7 | - | 66.7 | - | 51.1 | 67 | 100 | 22 | 10.4 | 27.6 | - | - | 0.00 | 37.66 | 0.284 | 560 | - | |
| Avg | - | - | - | - | 47.2 | 51 | - | - | 3.1 | - | - | - | - | - | - | - | - | |
| Min | 90.3 | - | 43.1 | - | 37.1 | 25 | 44 | 11 | 0.9 | 7.1 | - | - | 0.00 | 24.64 | 0.133 | 433 | - |
| 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) | 3/20/26 | 94.3 3.0 | 1614 | 51.9 2.3 | 0647 | 53.2 1.8 | 59 | 83 2 | 25 4 | 0.8 | 7.9 1.8 | 1619 | 0.00 | 29.12 | 0.163 0.008 | 514 6 | 40 |
| Windsor-East (Ranch 16) | 3/20/26 | 92.8 2.1 | 1550 | 45.8 2.3 | 0705 | 50.0 0.2 | 62 | 95 5 | 18 3 | 1.4 | 9.1 0.2 | 1645 | 0.00 | 21.96 | 0.172 0.016 | 512 10 | 20 |
| Mark West-North (Ranch 14) | 3/20/26 | 92.6 1.3 | 1530 | 46.4 1.3 | 0726 | 50.4 1.0 | 62 | 98 0 | 19 5 | 0.8 | 9.2 1.8 | 1630 | 0.00 | 23.74 | 0.023 0.011 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 3/20/26 | 92.1 1.2 | 1557 | 45.2 2.9 | 0725 | 50.3 1.3 | 66 | 98 1 | 25 7 | 1.2 | 8.7 2.4 | 1642 | 0.00 | 21.14 | 0.164 0.015 | 506 10 | 0 |
| Fulton-NW (Ranch 5) | 3/20/26 | 90.7 0.9 | 1604 | 45.3 2.1 | 0725 | 49.8 0.3 | 64 | 100 0 | 3 0 | 1.3 | 9.5 2.1 | 1623 | 0.00 | 23.97 | 0.172 0.017 | 515 8 | 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) | 3/20/26 | 92.2 0.2 | 1557 | 47.5 2.9 | 0658 | 51.2 0.1 | 61 | 95 1 | 18 2 | 1.4 | 10.7 2.6 | 1641 | 0.00 | 23.01 | - | - | 0 |
| Fulton-SW (Ranch 21) | 3/20/26 | 90.1 1.2 | 1422 | 45.8 3.0 | 0725 | 50.2 4.8 | 64 | 100 0 | 0 0 | 1.4 | 9.1 0.2 | 1645 | 0.00 | 23.44 | 0.177 0.013 | 545 8 | 0 |
| NW Santa Rosa (Piner Road) | 3/20/26 | 91.5 1.5 | 1602 | 45.2 2.2 | 0728 | 53.7 0.6 | 72 | 100 0 | 29 2 | 1.2 | 9.8 0.5 | 1613 | 0.00 | 21.90 | - | - | 0 |
| River Rd South (Denner Ranch) | 3/20/26 | 89.3 7.0 | 1447 | 45.6 3.1 | 0737 | 52.6 1.8 | 70 | 100 0 | 0 18 | 2.1 | 13.6 5.3 | 1632 | - | - | - | - | 0 |
| West Santa Rosa (LOV Vineyard) | 3/20/26 | 90.7 2.2 | 1518 | 46.6 3.1 | 0722 | 51.1 1.6 | 66 | 100 2 | 23 5 | 1.2 | 10.1 1.8 | 1603 | 0.00 | 16.83 | 0.030 0.001 | 1 32 | 0 |
| Guerneville Rd (Prokopakis) | 3/20/26 | 93.5 0.4 | 1534 | 47.5 2.6 | 0721 | 51.7 1.7 | 65 | 97 1 | 22 3 | - | - | - | 0.00 | 23.04 | - | - | 0 |
| Guerneville Rd West (Balletto) | 3/20/26 | 91.2 0.8 | 1521 | 44.8 2.7 | 0712 | 52.8 1.2 | 71 | 100 0 | 26 2 | 1.6 | 9.7 2.1 | 1623 | 0.00 | 22.55 | - | - | 0 |
| Sanchietti Ranch | 3/20/26 | 90.7 0.8 | 1541 | 46.6 3.5 | 0713 | 54.1 1.0 | - | 98 0 | 32 4 | 1.7 | 9.5 1.5 | 1528 | 0.00 | 23.50 | - | - | 0 |
| Occidental Rd (Sebastopol) | 3/20/26 | 90.8 1.0 | 1509 | 44.7 3.5 | 0619 | 57.6 1.2 | 83 | 100 0 | 34 7 | 1.4 | 11.6 4.4 | 1605 | 0.00 | 6.96 | - | - | 0 |
| Lower Westside Rd (Ranch 12) | 3/20/26 | 92.7 3.1 | 1556 | 45.8 1.5 | 0658 | 50.8 1.0 | 65 | 95 5 | 19 2 | 1.1 | 9.0 2.1 | 1634 | 0.00 | 28.30 | - | - | 40 |
| Guerneville (Laughlin Rd) | 3/20/26 | 93.8 1.0 | 1448 | 44.2 0.7 | 0739 | 49.4 0.9 | 68 | 98 0 | 17 3 | 1.0 | 10.0 1.2 | 1524 | 0.00 | 39.24 | - | - | 0 |
| Korbel (Winery) | 3/20/26 | 94.4 2.4 | 1447 | 46.7 0.9 | 0731 | 50.9 0.6 | 68 | 100 0 | 20 4 | 0.8 | 11.4 1.6 | 1611 | 0.00 | 36.61 | - | - | 30 |
| Forestville (Shone Farms) | 3/20/26 | 93.7 0.2 | 1536 | 48.9 2.9 | 0505 | 50.7 1.9 | 57 | 92 4 | 22 2 | 1.5 | 9.1 0.8 | 1542 | 0.00 | 30.31 | 0.164 0.011 | 492 6 | 0 |
| Forestville-NE (Ranch 30) | 3/20/26 | 91.9 2.8 | 1520 | 47.0 1.9 | 0742 | 53.2 1.7 | 68 | 98 2 | 25 1 | 1.3 | 9.6 2.3 | 1527 | 0.00 | 28.46 | 0.170 0.015 | 505 7 | 40 |
| Green Valley Vineyard | 3/20/26 | 91.1 0.0 | 1444 | 49.0 1.4 | 0645 | 49.7 0.6 | 56 | 84 14 | 21 5 | 1.9 | 10.7 3.9 | 1630 | 0.00 | 35.04 | 0.095 0.008 | 240 16 | 0 |
| Green Valley (Sanchietti) | 3/20/26 | 91.9 1.1 | 1424 | 42.7 2.1 | 0717 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| Keefer Ranch (Green Valley) | 3/20/26 | 92.1 0.7 | 1451 | 43.8 2.0 | 0725 | 51.8 1.8 | 71 | 98 0 | 28 9 | - | - | - | 0.00 | 31.31 | - | - | 0 |
| Graton-South (Mill Station Rd) | 3/20/26 | 89.5 1.9 | 1403 | 42.9 2.1 | 0719 | 50.4 1.1 | 67 | 98 0 | 25 8 | 0.3 | 6.4 0.7 | 1545 | 0.00 | 27.62 | - | - | 0 |
| Occidental (Horseshoe Bend) | 3/20/26 | 86.8 0.5 | 1433 | 57.8 2.6 | 0624 | 48.9 0.7 | - | 69 7 | 28 8 | - | - | - | 0.00 | 32.02 | - | - | 100 |
| Sexton Valley (Jacqueline's Blk) | 3/20/26 | 90.8 0.6 | 1441 | 46.1 3.0 | 0717 | 52.5 1.4 | 70 | 100 0 | 29 2 | 1.2 | 10.6 2.4 | 1553 | 0.00 | 15.31 | - | - | 0 |
| Sebastopol Hills (Burnside Rd) | 3/20/26 | 87.0 1.0 | 1348 | 59.2 7.1 | 0719 | 49.8 0.6 | 48 | 61 30 | 31 2 | 1.9 | 11.2 3.8 | 1535 | 0.00 | 27.89 | - | - | 0 |
| Seaview/Fort Ross (Hirsch) | 3/20/26 | 84.7 0.1 | 1726 | 69.1 0.7 | 0023 | 37.2 8.3 | 25 | 38 6 | 13 6 | 2.7 | 12.0 2.0 | 0034 | 0.00 | 48.40 | 0.193 0.007 | 549 4 | 100 |
| Max | 94.4 | - | 69.1 | - | 57.6 | 83 | 100 | 34 | 2.7 | 13.6 | - | 0.00 | 48.40 | 0.193 | 549 | - | |
| Avg | - | - | - | - | 50.9 | 64 | - | - | 1.4 | - | - | - | - | - | - | - | |
| Min | 84.7 | - | 42.7 | - | 37.2 | 25 | 38 | 0 | 0.3 | 6.4 | - | 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 | 3/20/26 | 89.6 1.7 | 1638 | 62.6 2.2 | 0259 | 48.3 1.7 | 75 8 | 18 1 | 2.4 0.1 | 8.8 1.0 | 1523 | SSE | 151 | 0.00 | 5.41 | 0.180 0.010 | 532 11 | 0 0 |
| Lower Bennett Valley | 3/20/26 | 90.3 0.3 | 1459 | 44.6 2.9 | 0656 | 52.4 0.5 | 100 0 | 24 3 | 1.4 0.1 | 7.8 1.7 | 1123 | NW | 306 | 0.00 | 22.06 | 0.164 0.011 | 500 10 | 0 0 |
| Kenwood (Wildwood) | 3/20/26 | 91.2 1.5 | 1510 | 49.2 2.4 | 0743 | 53.8 0.4 | 96 4 | 27 5 | 2.8 0.4 | 9.1 0.4 | 1631 | NNW | 331 | 0.00 | 26.90 | 0.154 0.009 | 459 5 | 30 10 |
| Sonoma Valley (Bedrock) | 3/20/26 | 91.2 2.0 | 1616 | 49.3 4.0 | 0725 | 53.0 0.3 | 93 3 | 27 6 | - | - | - | - | 0.00 | 23.11 | - | - | 60 10 |
| Sonoma-West (Arnold) | 3/20/26 | 93.0 2.5 | 1642 | 47.8 3.8 | 0726 | 53.7 0.3 | 95 1 | 24 8 | 1.7 0.1 | 9.1 0.4 | 1339 | SSW | 196 | 0.00 | 17.20 | 0.188 0.007 | 573 9 | 30 10 |
| Sonoma Valley HS | 3/20/26 | 91.9 3.1 | 1605 | 49.5 2.8 | 0719 | 57.2 0.8 | 100 0 | 26 11 | 0.9 0.0 | 6.0 1.1 | 1709 | SSW | 192 | 0.00 | 5.29 | 0.161 0.006 | 512 8 | 0 10 |
| Sonoma East (Bundschu01) | 3/20/26 | 91.1 3.5 | 1647 | 48.7 3.1 | 0748 | 55.3 1.0 | 98 0 | 21 17 | 1.5 0.1 | 7.0 1.8 | 1701 | SSW | 198 | 0.00 | 17.48 | 0.173 0.007 | 533 9 | 30 10 |
| 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) | 3/20/26 | 93.5 4.2 | 1630 | 49.0 3.8 | 0702 | 54.9 0.6 | 97 1 | 19 18 | 0.7 0.4 | 7.8 0.0 | 1617 | SW | 218 | 0.00 | 14.95 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 3/20/26 | 91.3 1.6 | 1607 | 48.2 1.4 | 0702 | 54.0 0.2 | 98 2 | 22 11 | 2.2 0.2 | 8.8 0.2 | 1737 | WSW | 256 | 0.00 | 18.75 | 0.179 0.013 | 546 11 | 0 0 |
| Carneros (Ranch 71) | 3/20/26 | 90.6 1.4 | 1600 | 58.9 3.9 | 0732 | 55.2 0.1 | 86 3 | 22 12 | 2.0 0.2 | 10.5 0.7 | 1733 | W | 261 | 0.00 | 16.20 | 0.175 0.016 | 525 12 | 30 10 |
| Carneros Upper (Ranch 81) | 3/20/26 | 90.9 1.9 | 1638 | 60.9 5.4 | 0736 | 54.2 1.0 | - | - | 2.9 0.1 | 12.5 2.4 | 1757 | WSW | 256 | - | - | - | - | 90 20 |
| Carneros Lower (Ranch 81) | 3/20/26 | 99.4 8.3 | 1650 | 49.6 1.7 | 0721 | 51.9 1.1 | 100 0 | 0 0 | 0.7 0.3 | 6.9 0.1 | 1144 | S | 175 | 0.00 | 16.94 | 0.127 0.001 | 402 12 | 0 0 |
| Rohnert Park-West (Stony Point) | 3/20/26 | 88.5 0.5 | 1456 | 41.8 2.0 | 0728 | 51.8 0.3 | 98 0 | 30 6 | 1.1 0.2 | 11.5 2.4 | 1655 | SW | 230 | 0.00 | 6.33 | - | - | 0 0 |
| Cartograph Wines Base | 3/20/26 | 86.9 0.9 | 1435 | 56.2 9.0 | 0603 | 52.3 0.6 | 76 23 | 33 3 | 2.3 0.3 | 14.0 4.2 | 1601 | WSW | 251 | 0.00 | 22.43 | 0.164 0.011 | 515 11 | 0 0 |
| Cartograph Wines Remote | 3/20/26 | 88.1 4.4 | 1250 | 45.0 2.9 | 0711 | - | - | - | - | - | - | - | - | - | - | - | 70 10 |
| Rice-Spivak Vineyard | 3/20/26 | 88.8 1.2 | 1402 | 38.0 2.5 | 0705 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Penngrove (Asellus) | 3/20/26 | 90.5 1.0 | 1550 | 44.4 3.4 | 0716 | 50.9 0.2 | 98 0 | 20 11 | 1.4 0.1 | 7.7 0.9 | 1646 | W | 275 | 0.00 | 45.71 | - | - | 0 0 |
| Petaluma (Ranch 10) | 3/20/26 | 93.3 1.4 | 1629 | 44.3 2.5 | 0706 | 50.3 0.4 | 100 0 | 17 10 | 1.1 0.1 | 9.3 1.1 | 1601 | N | 9 | 0.00 | 15.67 | 0.162 0.007 | 477 10 | 30 10 |
| Max | 99.4 | - | 62.6 | - | 57.2 | 100 | 33 | 2.9 | 14.0 | - | - | 0.00 | 45.71 | 0.188 | 573 | - | |
| Avg | - | - | - | - | 53.1 | - | - | 1.7 | - | - | - | - | - | - | - | - | |
| Min | 86.9 | - | 38.0 | - | 48.3 | 75 | 0 | 0.7 | 6.0 | - | - | 0.00 | 5.29 | 0.127 | 402 | - |