| 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) | 2/20/26 | 52.2 4.8 | 1451 | 32.2 3.4 | 0714 | 30.8 4.5 | 68 | 90 10 | 34 19 | 2.6 | 10.2 16.2 | 0313 | NW | 324 | 0.00 | 33.60 | - | - | 0 0 |
| Rockpile Upper (Cooley) | 2/20/26 | 50.2 6.5 | 1529 | 30.7 1.2 | 0250 | 29.7 4.1 | 72 | 94 6 | 41 16 | 7.3 | 21.7 27.2 | 0014 | NNW | 337 | 0.00 | 34.32 | 0.065 0.021 | 306 11 | 0 0 |
| Cloverdale-East (Ranch 83) | 2/20/26 | 54.7 1.3 | 1542 | 32.0 1.1 | 0240 | 32.2 14.2 | - | - | - | 3.5 | 14.0 12.8 | 0833 | N | 0 | 0.00 | 28.74 | 0.062 0.007 | 271 4 | 0 0 |
| Cloverdale-SE (Ranch 38) | 2/20/26 | 54.2 2.7 | 1516 | 33.5 3.5 | 0713 | 33.2 4.4 | 73 | 90 9 | 40 11 | 5.0 | 16.9 18.2 | 1542 | N | 2 | 0.00 | 30.28 | 0.061 0.001 | 261 19 | 0 0 |
| Geyserville-North (Hoffman) | 2/20/26 | 54.9 0.7 | 1544 | 31.3 6.4 | 0651 | 33.2 4.6 | 76 | 95 1 | 37 8 | 2.3 | 12.0 8.4 | 1535 | S | 182 | 0.00 | 25.50 | 0.061 0.009 | 263 30 | 0 0 |
| Geyserville (Ranch 3) | 2/20/26 | 54.7 1.8 | 1442 | 31.8 6.8 | 0653 | 33.7 4.2 | 76 | 100 0 | 33 10 | 2.7 | 11.1 12.7 | 1550 | ESE | 104 | 0.00 | 29.64 | 0.063 0.011 | 290 36 | 0 0 |
| Geyserville-East (Ranch 40) | 2/20/26 | 54.3 1.9 | 1245 | 33.2 4.0 | 0650 | 33.6 4.0 | 71 | 91 8 | 45 6 | 5.3 | 18.4 14.8 | 1532 | SSW | 202 | 0.00 | 30.28 | 0.070 0.005 | 308 2 | 0 0 |
| Geyserville-South (Nervo Station) | 2/20/26 | 54.2 0.4 | 1331 | 32.1 8.2 | 0617 | - | - | - | - | 1.9 | 15.8 11.1 | 0023 | WNW | 297 | 0.00 | 22.99 | - | - | 0 0 |
| Jimtown-North (Piccolo Ranch 15) | 2/20/26 | 55.5 2.3 | 1443 | 28.5 10.6 | 0637 | 32.4 4.3 | 75 | 100 3 | 38 4 | 1.5 | 10.1 14.5 | 1500 | SSW | 210 | 0.00 | 27.45 | 0.056 0.011 | 255 40 | 0 0 |
| Jimtown-NE (Red Fan) | 8/26/25 | 88.9 0.8 | 1609 | 56.4 0.1 | 0146 | 53.1 1.9 | 64 | 94 2 | 20 8 | 3.5 | 13.4 0.5 | 1919 | S | 169 | 0.00 | 0.00 | 0.187 0.011 | 528 30 | 0 0 |
| HWY 128/Chalk Hill Rd (Landslide) | 2/20/26 | 56.1 2.4 | 1622 | 28.4 5.1 | 0632 | 33.5 4.0 | 81 | 98 2 | 40 2 | 1.8 | 9.6 10.3 | 1453 | SW | 222 | 0.00 | 26.41 | 0.053 0.014 | 236 50 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 2/20/26 | 54.8 2.9 | 1607 | 27.8 8.7 | 0702 | 32.6 3.6 | 78 | 100 1 | 42 2 | 1.9 | 9.5 15.8 | 1541 | SSE | 150 | 0.00 | 27.76 | 0.054 0.012 | 242 32 | 0 0 |
| Knights Valley (Bavarian Lion) | 2/20/26 | 55.2 3.0 | 1600 | 25.3 6.2 | 0704 | 31.2 4.6 | 80 | 97 2 | 36 3 | 1.7 | 8.7 17.9 | 1457 | W | 263 | 0.00 | 26.29 | 0.057 0.021 | 276 85 | - |
| Upper Dry Creek Valley | 2/20/26 | 54.5 2.3 | 1527 | 31.4 3.8 | 0700 | 33.2 1.8 | 78 | 97 0 | 35 9 | 1.7 | 11.1 13.3 | 1432 | SE | 135 | 0.00 | 32.03 | 0.066 | 296 | - |
| Lower Dry Creek Valley | 2/20/26 | 56.0 1.7 | 1431 | 30.3 7.2 | 0705 | 34.1 3.7 | 78 | 100 0 | 35 7 | 2.3 | 10.8 15.7 | 1556 | SSE | 147 | 0.00 | 31.48 | 0.062 0.021 | 269 79 | 0 0 |
| Max | 56.1 | - | 33.5 | - | 34.1 | 81 | 100 | 45 | 7.3 | 21.7 | - | - | 0.00 | 34.32 | 0.070 | 308 | - | |
| Avg | - | - | - | - | 32.6 | 76 | - | - | 3.0 | - | - | - | - | - | - | - | - | |
| Min | 50.2 | - | 25.3 | - | 29.7 | 68 | 90 | 33 | 1.5 | 8.7 | - | - | 0.00 | 22.99 | 0.053 | 236 | - |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Healdsburg-South (Sodini) | 2/11/26 | 61.5 0.6 | 1136 | 49.6 13.4 | 0010 | - | - | 95 5 | 60 9 | 3.9 | 21.6 12.3 | 0227 | 0.18 | 19.98 | - | - | 0 |
| Windsor-NW (Ranch 8) | 2/20/26 | 57.7 3.4 | 1248 | 30.7 8.5 | 0553 | 35.2 3.1 | 77 | 90 1 | 47 3 | 1.2 | 9.4 22.6 | 0848 | 0.00 | 27.33 | 0.054 0.026 | 257 114 | 0 |
| Windsor-East (Ranch 16) | 2/20/26 | 56.1 1.9 | 1608 | 30.6 4.9 | 0247 | 33.7 3.4 | 76 | 100 5 | 44 2 | 2.0 | 10.4 15.3 | 1550 | 0.00 | 20.46 | 0.055 0.030 | 262 100 | 0 |
| Mark West-North (Ranch 14) | 2/20/26 | 56.4 1.6 | 1533 | 29.7 7.5 | 0625 | 33.4 3.1 | 77 | 98 2 | 42 5 | 1.0 | 8.1 6.0 | 1533 | 0.00 | 22.23 | 0.009 0.016 | 0 0 | 0 |
| Windsor-SE (Silk Rd) | 2/20/26 | 55.9 1.8 | 1608 | 28.4 7.2 | 0707 | 33.3 3.9 | 80 | 98 0 | 42 2 | 1.2 | 8.6 15.1 | 1529 | 0.00 | 19.33 | 0.054 0.026 | 261 82 | 0 |
| Fulton-NW (Ranch 5) | 2/20/26 | 54.2 1.0 | 1600 | 28.5 7.0 | 0637 | 33.2 3.8 | 80 | 100 4 | 3 36 | 1.3 | 8.7 16.5 | 1533 | 0.00 | 22.50 | 0.055 0.026 | 268 68 | 0 |
| Windsor-South (Laughlin Rd) | 2/20/26 | 55.0 1.3 | 1523 | 29.6 7.9 | 0655 | 34.0 2.7 | 77 | 94 1 | 43 2 | - | - | - | 0.00 | 22.53 | - | - | - |
| Fulton-SE (Barnes Rd) | 2/20/26 | 55.2 1.1 | 1545 | 29.3 6.7 | 0625 | 34.3 3.9 | 80 | 97 2 | 43 4 | 0.5 | 9.0 19.1 | 1701 | 0.00 | 21.52 | - | - | - |
| Fulton-SW (Ranch 21) | 2/20/26 | 54.1 0.6 | 1507 | 28.8 6.1 | 0445 | 26.5 10.8 | 73 | 100 5 | 0 43 | 1.6 | 7.9 16.1 | 1625 | 0.00 | 22.04 | 0.059 0.022 | 292 60 | - |
| Santa Rosa-NW (Goldfields) | 2/20/26 | 56.5 1.4 | 1535 | 29.0 6.4 | 0651 | 34.0 3.5 | 78 | 100 3 | 41 2 | 1.4 | 8.4 19.2 | 1513 | 0.00 | 23.32 | 0.050 0.030 | 234 60 | - |
| Goldfields Remote | 2/20/26 | 54.9 1.0 | 1537 | 28.4 5.4 | 0623 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 2/20/26 | 54.3 0.8 | 1600 | 28.4 5.2 | 0653 | 35.5 4.1 | 87 | 100 0 | 51 2 | 1.1 | 9.6 3.5 | 1528 | 0.00 | 20.50 | - | - | 0 |
| River Rd South (Denner Ranch) | 2/20/26 | 56.3 1.5 | 1600 | 28.7 7.3 | 0644 | 35.2 2.8 | 83 | 100 0 | 44 3 | 1.8 | 10.3 15.1 | 1653 | - | - | - | - | 0 |
| West Santa Rosa (LOV Vineyard) | 2/20/26 | 56.1 2.8 | 1531 | 29.1 6.5 | 0612 | 33.8 3.3 | 80 | 98 2 | 44 3 | 0.9 | 9.5 10.5 | 1517 | 0.01 | 15.84 | 0.008 0.022 | 1 1 | 0 |
| Guerneville Rd (Prokopakis) | 2/20/26 | 55.3 1.3 | 1533 | 30.6 7.6 | 0710 | 35.2 3.0 | 81 | 99 1 | 46 4 | - | - | - | 0.00 | 21.50 | - | - | 0 |
| Guerneville Rd West (Balletto) | 2/20/26 | 54.7 0.1 | 1542 | 29.0 4.6 | 0549 | 35.0 3.9 | 85 | 100 1 | 52 4 | 1.3 | 9.5 12.6 | 1636 | 0.00 | 21.18 | - | - | 0 |
| Sanchietti Ranch | 2/20/26 | 55.1 0.4 | 1537 | 30.9 4.5 | 0523 | 36.5 4.0 | - | 99 3 | 53 1 | 1.3 | 9.8 12.2 | 1624 | 0.00 | 22.24 | - | - | - |
| Occidental Rd (Sebastopol) | 2/20/26 | 55.5 0.3 | 1559 | 29.8 4.1 | 0524 | 39.1 4.8 | 96 | 100 0 | 68 4 | 1.2 | 9.2 15.6 | 1620 | 0.00 | 6.87 | - | - | 0 |
| Lower Westside Rd (Ranch 12) | 2/20/26 | 58.4 0.6 | 1454 | 30.4 8.2 | 0639 | 34.0 3.3 | 75 | 100 4 | 40 5 | 0.0 | 0.0 13.0 | 0001 | 0.00 | 26.48 | - | - | 0 |
| Guerneville (Laughlin Rd) | 2/20/26 | 56.8 2.4 | 1431 | 30.8 1.8 | 0706 | 35.1 2.1 | 86 | 98 1 | 41 2 | 0.5 | 8.0 13.2 | 1432 | 0.00 | 35.88 | - | - | - |
| Korbel (Winery) | 2/20/26 | 55.2 0.8 | 1529 | 31.8 3.0 | 0630 | 36.1 2.0 | 87 | 100 3 | 45 6 | 0.8 | 8.1 16.7 | 1358 | 0.00 | 33.48 | - | - | - |
| Forestville (Shone Farms) | 2/20/26 | 55.8 1.5 | 1456 | 29.0 8.9 | 0633 | 34.1 3.2 | 80 | 97 1 | 43 2 | 1.3 | 8.3 14.4 | 1507 | 0.00 | 28.38 | 0.053 0.021 | 253 56 | 0 |
| Forestville-NE (Ranch 30) | 2/20/26 | 55.1 1.3 | 1518 | 29.0 5.4 | 0559 | 35.4 3.3 | 86 | 100 0 | 50 2 | 1.2 | 10.7 16.4 | 1521 | 0.00 | 26.63 | 0.054 0.021 | 265 73 | - |
| Green Valley Vineyard | 2/20/26 | 53.9 0.7 | 1653 | 29.5 4.7 | 0617 | 34.2 2.9 | 83 | 98 0 | 49 11 | 1.8 | 6.6 17.3 | 1459 | 0.00 | 32.69 | 0.026 0.017 | 107 14 | - |
| Green Valley (Sanchietti) | 2/20/26 | 57.2 1.5 | 1500 | 29.3 5.6 | 0640 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| Keefer Ranch (Green Valley) | 2/20/26 | 54.6 0.2 | 1510 | 28.4 4.9 | 0535 | 34.4 4.6 | 87 | 98 1 | 56 8 | - | - | - | 0.00 | 29.21 | - | - | - |
| Graton-South (Mill Station Rd) | 2/20/26 | 55.3 1.4 | 1458 | 28.3 5.0 | 0646 | 33.8 3.7 | 83 | 98 0 | 41 0 | 0.1 | 7.9 6.5 | 1544 | 0.00 | 26.74 | - | - | 0 |
| Occidental (Horseshoe Bend) | 2/20/26 | 53.8 1.1 | 1547 | 33.3 3.6 | 0636 | 33.7 3.4 | - | 93 7 | 48 3 | - | - | - | 0.00 | 16.27 | - | - | - |
| Sexton Valley (Jacqueline's Blk) | 2/20/26 | 55.5 1.3 | 1535 | 28.4 4.1 | 0514 | 34.4 4.3 | 86 | 100 1 | 49 3 | 1.1 | 8.2 12.3 | 1257 | 0.00 | 12.85 | - | - | 0 |
| Sebastopol Hills (Burnside Rd) | 2/20/26 | 53.8 1.1 | 1543 | 32.9 5.3 | 0617 | 35.7 2.6 | 79 | 96 4 | 53 2 | 1.0 | 8.9 11.4 | 1606 | 0.00 | 25.91 | - | - | 0 |
| Seaview/Fort Ross (Hirsch) | 2/20/26 | 50.3 4.2 | 1419 | 33.9 1.0 | 0225 | 31.9 3.9 | 72 | 88 9 | 53 12 | 3.8 | 13.4 13.3 | 1212 | 0.00 | 42.83 | 0.056 0.003 | 280 79 | - |
| Max | 58.4 | - | 33.9 | - | 39.1 | 96 | 100 | 68 | 3.8 | 13.4 | - | 0.01 | 42.83 | 0.059 | 292 | - | |
| Avg | - | - | - | - | 34.3 | 81 | - | - | 1.2 | - | - | - | - | - | - | - | |
| Min | 50.3 | - | 28.3 | - | 26.5 | 72 | 88 | 0 | 0.0 | 0.0 | - | 0.00 | 6.87 | 0.008 | 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 | 2/20/26 | 51.9 0.3 | 1539 | 31.2 1.6 | 0328 | 31.6 3.5 | 94 3 | 39 5 | 2.0 0.7 | 9.0 7.4 | 2239 | SE | 128 | 0.00 | 5.41 | 0.055 0.023 | 275 118 | - |
| Lower Bennett Valley | 2/20/26 | 54.8 2.4 | 1554 | 26.3 4.1 | 0615 | 32.4 3.7 | 100 1 | 36 4 | 1.6 3.3 | 10.2 15.2 | 1533 | SW | 235 | 0.00 | 20.88 | 0.056 0.013 | 269 22 | 0 0 |
| Kenwood (Wildwood) | 2/20/26 | 53.1 0.2 | 1536 | 28.5 5.0 | 0639 | 33.2 3.5 | 100 1 | 44 1 | 2.5 3.3 | 9.6 19.4 | 1627 | SW | 223 | 0.00 | 25.94 | 0.053 0.021 | 242 77 | - |
| Sonoma Valley (Bedrock) | 2/20/26 | 54.0 0.7 | 1335 | 29.0 8.0 | 0650 | 32.4 2.7 | 95 2 | 41 5 | - | - | - | - | 0.00 | 22.35 | - | - | - |
| Sonoma-West (Arnold) | 2/20/26 | 56.6 1.6 | 1318 | 30.5 5.8 | 0706 | 34.3 2.5 | 95 1 | 43 5 | 1.9 4.5 | 8.2 17.3 | 1528 | SE | 128 | 0.09 | 16.94 | 0.074 0.025 | 348 73 | - |
| Sonoma Valley HS | 2/20/26 | 54.2 0.5 | 1537 | 29.5 6.6 | 0653 | 35.9 3.2 | 100 0 | 53 8 | 1.3 2.1 | 8.3 2.9 | 1400 | SE | 138 | 0.01 | 5.22 | 0.061 0.015 | 308 40 | - |
| Sonoma East (Bundschu01) | 2/20/26 | 54.5 0.3 | 1548 | 28.4 7.4 | 0508 | 33.4 2.7 | 95 4 | 46 10 | 2.1 5.1 | 11.0 18.6 | 1245 | SE | 128 | 0.00 | 16.89 | 0.066 0.028 | 318 69 | - |
| 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) | 2/20/26 | 60.4 4.9 | 1329 | 29.5 5.9 | 0640 | 33.7 2.8 | 95 3 | 41 3 | 1.5 5.1 | 9.1 19.1 | 1319 | E | 82 | 0.00 | 14.62 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 2/20/26 | 56.2 0.9 | 1335 | 30.8 7.2 | 0653 | 34.7 2.5 | 96 2 | 45 6 | 2.9 6.9 | 10.2 15.0 | 1332 | E | 82 | 0.00 | 18.42 | 0.074 0.022 | 350 54 | - |
| Carneros (Ranch 71) | 2/20/26 | 53.5 0.1 | 1553 | 33.4 5.5 | 0457 | 35.0 1.5 | 93 3 | 50 9 | 3.0 8.8 | 11.8 22.0 | 1414 | E | 96 | 0.00 | 15.82 | 0.064 0.026 | 313 49 | 0 0 |
| Carneros Upper (Ranch 81) | 2/20/26 | 57.0 3.2 | 1338 | 33.2 6.2 | 0556 | 34.4 4.4 | - | - | 3.2 10.0 | 13.2 22.5 | 1230 | ESE | 104 | - | - | - | - | 0 0 |
| Carneros Lower (Ranch 81) | 2/20/26 | 54.3 0.6 | 1337 | 30.0 6.8 | 0527 | 34.5 1.8 | 100 0 | 0 0 | 1.3 3.4 | 8.5 13.6 | 1608 | SSE | 165 | 0.00 | 16.55 | 0.051 0.019 | 226 7 | 0 0 |
| Rohnert Park-West (Stony Point) | 2/20/26 | 55.2 1.6 | 1506 | 29.4 5.1 | 0441 | 34.8 4.1 | 98 0 | 50 1 | 1.1 5.5 | 13.8 11.0 | 1505 | ESE | 109 | 0.00 | 5.16 | - | - | - |
| Cartograph Wines Base | 2/20/26 | 54.9 0.8 | 1541 | 34.2 4.0 | 0619 | 37.2 1.9 | 94 5 | 54 4 | 2.2 4.2 | 10.7 18.6 | 1441 | ESE | 116 | 0.00 | 21.41 | 0.063 0.012 | 321 36 | - |
| Cartograph Wines Remote | 2/20/26 | 55.2 2.3 | 1304 | 29.5 3.0 | 0515 | - | - | - | - | - | - | - | - | - | - | - | - |
| Rice-Spivak Vineyard | 2/20/26 | 57.5 1.7 | 1539 | 25.2 3.4 | 0517 | - | - | - | - | - | - | - | - | - | - | - | - |
| Penngrove (Asellus) | 2/20/26 | 54.2 0.2 | 1526 | 32.9 3.0 | 0600 | 34.3 2.4 | 93 4 | 41 3 | 3.1 3.9 | 15.6 9.5 | 0614 | N | 2 | 0.30 | 25.38 | - | - | 0 0 |
| Petaluma (Ranch 10) | 2/20/26 | 57.7 0.7 | 1314 | 29.1 5.3 | 0533 | 34.6 3.2 | 100 0 | 43 3 | 1.0 4.2 | 6.2 14.6 | 1137 | S | 170 | 0.00 | 15.20 | 0.063 0.017 | 290 31 | 0 0 |
| Max | 60.4 | - | 34.2 | - | 37.2 | 100 | 54 | 3.2 | 15.6 | - | - | 0.30 | 25.94 | 0.074 | 350 | - | |
| Avg | - | - | - | - | 34.2 | - | - | 2.0 | - | - | - | - | - | - | - | - | |
| Min | 51.9 | - | 25.2 | - | 31.6 | 93 | 0 | 1.0 | 6.2 | - | - | 0.00 | 5.16 | 0.051 | 226 | - |