Vs > Portland, Oregon
 | Jamestown vs Portland, Oregon Climate & Distance Between |  |
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- The distance between Jamestown, Saint Helena and Portland, Oregon, Usa is approximately 13,345 km or 8,293 mi.
- To reach Jamestown in this distance one would set out from Portland, Oregon bearing 82.1° or E
and follow the great circles arc to approach Jamestown bearing 133.9° or SE .
- Jamestown has a subtropical hot desert climate (BWh) whereas Portland, Oregon has a Mediterranean warm climate (Csb).
- The average temperature is 9.8 °C (17.7°F) warmer.
- Average monthly temperatures vary by 12.1 °C (21.8°F) less in Jamestown. The continentality subtype is truly hyperoceanic as opposed to truly oceanic.
- Total annual precipitation averages 784.9 mm (30.9 in) less which is equivalent to 784.9 l/m² (19.26 US gal/ft²) or 7,849,000 l/ha (839,110 US gal/ac) less. About 1/7 as much.
- The altitude of the sun at midday is overall 26.1° higher in Jamestown than in Portland, Oregon.
- Relative humidity levels are 0.1% lower.
- The mean dew point temperature is 9.5°C (17.1°F) higher.
Climate Comparison Table
The table shows values for Jamestown relative to Portland, Oregon. You can also view this comparison the other way around from the perspective of Portland, Oregon vs Jamestown.
| |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
|
Annual |
 | Average Max Temperature °C ( °F) |
+20 (+35) |
+16 (+30) |
+15 (+26) |
+11 (+20) |
+5 (+8) |
+0 (-1) |
-5 (-8) |
-5 (-9) |
+-2 (-3) |
+5 (+9) |
+12 (+21) |
+16 (+30) |
|
+7 (+13) |
 | Average Temperature °C ( °F) |
+20 (+36) |
+18 (+32) |
+16 (+28) |
+13 (+24) |
+8 (+15) |
+4 (+6) |
0 (0) |
0 (-1) |
+3 (+5) |
+8 (+14) |
+13 (+24) |
+17 (+31) |
|
+10 (+18) |
 | Average Min Temperature °C ( °F) |
+20 (+36) |
+19 (+34) |
+18 (+33) |
+16 (+28) |
+11 (+19) |
+6 (+12) |
+3 (+6) |
+3 (+6) |
+6 (+11) |
+11 (+19) |
+14 (+25) |
+17 (+31) |
|
+12 (+22) |
 | Average Precipitation mm (in) |
-128 (-5) |
-88 (-3) |
-70 (-3) |
-51 (-2) |
-34 (-1) |
-20 (-1) |
+17 (+1) |
-18 (-1) |
-39 (-2) |
-66 (-3) |
-136 (-5) |
-153 (-6) |
|
-785 (-31) |
 | Number of Precipitation Days (% chance of precip. on a day ) |
-14 ( -45) |
-11 ( -39) |
-12 ( -39) |
-9 ( -30) |
-6 ( -19) |
-3 ( -10) |
+5 (+16) |
-1 ( -3) |
-4 ( -13) |
-11 ( -35) |
-15 ( -50) |
-18 ( -58) |
|
-99 ( -27) |
 | Average Daylight Hours & Minutes/ Day |
+3h 53' |
+2h 24' |
+0h 26' |
-1h 39' |
-3h 26' |
-4h 21' |
-3h 57' |
-2h 24' |
-0h 22' |
+1h 43' |
+3h 29' |
+4h 22' |
|
0h 00' |
 | Sun altitude at solar noon on the 21st day (°) |
+60.6 |
+49.6 |
+28.9 |
+5.7 |
-10.8 |
-17.1 |
-11.1 |
+5.7 |
+28.5 |
+50.2 |
+60.4 |
+61.5 |
| +26.1 |
 | Relative Humidity (%) |
-16 |
-12 |
-7 |
+2 |
+11 |
+10 |
+15 |
+15 |
+10 |
-4 |
-8 |
-17 |
|
-0.1 |
 | Average Dew Point Temperature °C & (°F) |
+15.6 (+28) |
+14.3 (+26) |
+13.3 (+24) |
+13.1 (+24) |
+10.2 (+18) |
+5.7 (+10) |
+3.4 (+6) |
+3.1 (+6) |
+4.6 (+8) |
+6.4 (+12) |
+11.2 (+20) |
+13.3 (+24) |
|
+9.5 (+17) |
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Jamestown vs Portland, Oregon Discussion
You are welcome to incorporate your thoughts on the differences in climate or other matters such as contrasts in culture, standard of living, demographics etc.
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Climate Guides for Locations near Jamestown
Climate Guides for Locations near Portland, Oregon
- Centralia, Wa, Usa - 158.7 kms (98.6 miles) N
- Aberdeen, Wa, Usa - 179.2 kms (111.4 miles) NNW
- Olympia, Wa, Usa - 153.7 kms (95.5 miles) N
- Astoria/ Clatsop, Or, Usa - 116.7 kms (72.5 miles) WNW
- Vancouver, Wa, Usa - 6.4 kms (4 miles) NW
- Salem, Or, Usa - 83.2 kms (51.7 miles) SSW
- Corvallis, Or, Usa - 126.3 kms (78.5 miles) SSW
- Eugene, Or, Usa - 172 kms (106.9 miles) SSW
| - Seattle, Washington, Usa - 224 kms (139.2 miles) N
- Seattle/ Tacoma, Wa, Usa - 207 kms (128.6 miles) N
- Yakima, Wa, Usa - 192.2 kms (119.5 miles) NE
- Sunnyside, Wa, Usa - 206.4 kms (128.3 miles) ENE
- Moro, Or, Usa - 141.8 kms (88.1 miles) ESE
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