Total Cloud Cover Average Cloud Amount (%) November (1954 - 1997) Day, Ship Observations Only Global Average: 67.9 Zonal Averages 17 zones Lat.N Average 85 65.6 75 70.3 65 83.8 55 80.4 45 77.5 35 69.1 25 57.5 15 56.8 5 65.3 -5 58.2 -15 60.9 -25 62.6 -35 68.5 -45 77.1 -55 84.8 -65 85.2 -75 74.8 Grid Box Averages 380 filled boxes Box # Lat.N Lon.E Average 1 85 60 66.8 2 85 180 64.4 4 75 20 86.4 5 75 60 89.3 6 75 100 57.1 7 75 140 63.3 8 75 180 60.1 9 75 220 56.5 10 75 260 61.2 11 75 300 71.1 12 75 340 81.3 13 65 10 80.3 14 65 30 85.5 15 65 50 86.3 20 65 150 81.3 21 65 170 77.4 22 65 190 90.0 23 65 210 72.6 27 65 290 88.9 28 65 310 77.8 29 65 330 83.9 30 65 350 82.7 31 55 10 76.8 32 55 30 82.3 37 55 130 71.9 38 55 150 76.4 39 55 170 77.6 40 55 190 81.6 41 55 210 81.3 42 55 230 82.1 45 55 290 79.6 46 55 310 84.7 47 55 330 82.7 48 55 350 78.9 49 45 5 57.6 50 45 15 60.8 51 45 25 66.7 52 45 35 67.0 53 45 45 63.9 54 45 55 67.4 61 45 125 54.4 62 45 135 54.2 63 45 145 71.7 64 45 155 80.0 65 45 165 80.9 66 45 175 79.9 67 45 185 79.2 68 45 195 80.2 69 45 205 81.0 70 45 215 81.4 71 45 225 81.3 72 45 235 76.0 77 45 285 67.1 78 45 295 74.3 79 45 305 80.3 80 45 315 81.4 81 45 325 79.5 82 45 335 79.2 83 45 345 77.2 84 45 355 73.2 85 35 5 57.1 86 35 15 57.5 87 35 25 53.0 88 35 35 47.3 90 35 55 59.6 96 35 115 47.2 97 35 125 59.6 98 35 135 65.5 99 35 145 71.0 100 35 155 76.4 101 35 165 75.6 102 35 175 75.4 103 35 185 75.7 104 35 195 77.5 105 35 205 76.6 106 35 215 75.4 107 35 225 73.4 108 35 235 62.2 109 35 245 47.5 112 35 275 53.9 113 35 285 64.0 114 35 295 71.5 115 35 305 69.0 116 35 315 68.8 117 35 325 68.7 118 35 335 69.5 119 35 345 64.7 120 35 355 54.2 124 25 35 25.7 125 25 45 36.2 126 25 55 20.4 127 25 65 18.3 128 25 75 28.1 129 25 85 36.9 131 25 105 63.8 132 25 115 70.5 133 25 125 71.7 134 25 135 65.0 135 25 145 58.8 136 25 155 57.2 137 25 165 56.3 138 25 175 58.5 139 25 185 59.4 140 25 195 60.0 141 25 205 60.5 142 25 215 64.5 143 25 225 69.2 144 25 235 68.3 145 25 245 45.0 146 25 255 42.3 147 25 265 57.8 148 25 275 55.8 149 25 285 56.9 150 25 295 55.7 151 25 305 56.9 152 25 315 57.7 153 25 325 57.8 154 25 335 55.0 155 25 345 42.7 160 15 35 31.6 161 15 45 22.0 162 15 55 33.0 163 15 65 37.8 164 15 75 45.0 165 15 85 61.5 166 15 95 56.7 167 15 105 68.5 168 15 115 66.0 169 15 125 64.8 170 15 135 60.5 171 15 145 55.5 172 15 155 55.1 173 15 165 54.6 174 15 175 58.2 175 15 185 60.9 176 15 195 60.6 177 15 205 60.8 178 15 215 65.1 179 15 225 71.7 180 15 235 72.5 181 15 245 62.6 182 15 255 45.2 183 15 265 41.2 184 15 275 56.6 185 15 285 56.0 186 15 295 52.2 187 15 305 55.4 188 15 315 57.5 189 15 325 60.6 190 15 335 56.2 191 15 345 42.7 193 5 5 65.9 197 5 45 41.7 198 5 55 47.6 199 5 65 53.6 200 5 75 62.6 201 5 85 68.9 202 5 95 74.0 203 5 105 74.6 204 5 115 74.0 205 5 125 63.7 206 5 135 64.7 207 5 145 64.4 208 5 155 66.0 209 5 165 65.4 210 5 175 67.2 211 5 185 64.6 212 5 195 64.1 213 5 205 64.9 214 5 215 67.4 215 5 225 66.0 216 5 235 67.8 217 5 245 70.0 218 5 255 68.6 219 5 265 69.2 220 5 275 73.3 221 5 285 77.4 223 5 305 60.5 224 5 315 58.8 225 5 325 61.1 226 5 335 70.0 227 5 345 63.2 228 5 355 63.6 229 -5 5 72.5 230 -5 15 76.2 232 -5 35 47.5 233 -5 45 43.8 234 -5 55 53.1 235 -5 65 60.0 236 -5 75 64.0 237 -5 85 68.5 238 -5 95 74.3 239 -5 105 76.1 240 -5 115 64.2 241 -5 125 54.1 242 -5 135 56.6 243 -5 145 66.1 244 -5 155 66.8 245 -5 165 67.9 246 -5 175 64.5 247 -5 185 61.1 248 -5 195 55.1 249 -5 205 48.6 250 -5 215 43.0 251 -5 225 40.5 252 -5 235 39.7 253 -5 245 44.2 254 -5 255 52.9 255 -5 265 62.2 256 -5 275 70.0 257 -5 285 76.3 260 -5 315 49.5 261 -5 325 46.4 262 -5 335 50.5 263 -5 345 60.1 264 -5 355 68.3 265 -15 5 79.4 266 -15 15 68.7 268 -15 35 46.1 269 -15 45 43.7 270 -15 55 51.2 271 -15 65 55.0 272 -15 75 60.8 273 -15 85 63.5 274 -15 95 62.8 275 -15 105 59.5 276 -15 115 36.0 277 -15 125 41.0 278 -15 135 49.1 279 -15 145 48.3 280 -15 155 53.0 281 -15 165 62.1 282 -15 175 65.9 283 -15 185 66.9 284 -15 195 66.5 285 -15 205 64.9 286 -15 215 60.3 287 -15 225 53.6 288 -15 235 51.3 289 -15 245 54.3 290 -15 255 61.9 291 -15 265 69.3 292 -15 275 82.5 293 -15 285 82.2 297 -15 325 59.3 298 -15 335 55.6 299 -15 345 68.7 300 -15 355 81.8 301 -25 5 67.2 302 -25 15 59.0 304 -25 35 57.7 305 -25 45 56.1 306 -25 55 54.3 307 -25 65 55.3 308 -25 75 55.6 309 -25 85 56.2 310 -25 95 59.8 311 -25 105 64.5 312 -25 115 40.3 315 -25 145 43.8 316 -25 155 49.9 317 -25 165 54.8 318 -25 175 61.5 319 -25 185 64.7 320 -25 195 68.3 321 -25 205 69.2 322 -25 215 71.0 323 -25 225 68.9 324 -25 235 61.6 325 -25 245 60.1 326 -25 255 56.1 327 -25 265 66.2 328 -25 275 75.0 329 -25 285 78.3 332 -25 315 63.6 333 -25 325 67.3 334 -25 335 65.1 335 -25 345 62.1 336 -25 355 69.6 337 -35 5 69.6 338 -35 15 52.9 339 -35 25 58.3 340 -35 35 64.3 341 -35 45 65.7 342 -35 55 66.7 343 -35 65 70.3 344 -35 75 69.4 345 -35 85 68.6 346 -35 95 69.5 347 -35 105 72.8 348 -35 115 61.1 349 -35 125 68.3 350 -35 135 67.5 351 -35 145 61.8 352 -35 155 61.1 353 -35 165 67.0 354 -35 175 62.8 355 -35 185 63.8 356 -35 195 70.5 357 -35 205 73.9 358 -35 215 75.2 359 -35 225 75.0 360 -35 235 73.6 361 -35 245 76.0 362 -35 255 72.6 363 -35 265 72.8 364 -35 275 77.5 365 -35 285 70.5 366 -35 295 49.0 367 -35 305 56.4 368 -35 315 63.9 369 -35 325 67.7 370 -35 335 70.8 371 -35 345 71.1 372 -35 355 70.3 373 -45 5 80.1 374 -45 15 78.6 375 -45 25 81.6 376 -45 35 81.0 377 -45 45 77.6 378 -45 55 84.5 379 -45 65 82.0 380 -45 75 79.7 381 -45 85 81.1 382 -45 95 78.2 383 -45 105 78.8 384 -45 115 77.8 385 -45 125 76.2 386 -45 135 78.6 387 -45 145 69.2 388 -45 155 73.3 389 -45 165 76.1 390 -45 175 64.8 391 -45 185 72.2 392 -45 195 78.9 393 -45 205 80.5 394 -45 215 79.9 395 -45 225 82.0 396 -45 235 77.2 397 -45 245 79.8 400 -45 275 77.7 401 -45 285 79.9 402 -45 295 53.1 403 -45 305 59.1 404 -45 315 70.6 405 -45 325 81.8 406 -45 335 76.1 407 -45 345 78.2 408 -45 355 82.0 409 -55 10 85.4 410 -55 30 87.6 411 -55 50 88.0 412 -55 70 85.9 413 -55 90 89.0 414 -55 110 84.9 415 -55 130 88.3 416 -55 150 87.7 417 -55 170 84.3 418 -55 190 74.9 419 -55 210 86.0 420 -55 230 90.8 421 -55 250 82.9 422 -55 270 82.7 423 -55 290 75.0 424 -55 310 80.1 425 -55 330 81.4 426 -55 350 90.5 429 -65 50 76.7 430 -65 70 78.9 431 -65 90 86.9 432 -65 110 84.7 433 -65 130 86.5 434 -65 150 89.1 435 -65 170 90.6 436 -65 190 89.3 441 -65 290 83.0 442 -65 310 88.2 444 -65 350 81.2 449 -75 180 75.0 453 -75 340 74.4