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Old Jamestown, United States Snapshot 2026
Where is Old Jamestown?
Old Jamestown, United States
- Continent
- Americas
- Country
- United States
- City
- Old Jamestown
- Population
- 19.2K
- Coordinates
- 38.83°, -90.29°
Old Jamestown is a city in United States with a population of approximately 19.2K. Average temperatures range from -4°C (26°F) in January to 31°C (88°F) in July. The best time to visit is May, June, August, September, October.
Time in Old Jamestown right now
Open full time & time zone page 16:51 51
Monday, June 15, 2026
IANA time zone
America/Chicago
Daylight saving
DST in effect
CST / CDT
Next DST change
November 1
backward -1h
Live weather in Old Jamestown
Daylight in Old Jamestown today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 52m
Climate normals for Old Jamestown
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Fair April
Good May best
Excellent June best
Excellent July
Fair August best
Excellent September best
Excellent October best
Good November
Fair December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 4°C / -4°C | 0°C / -8°C | 8days (74 mm) Wet | 5.5h Fair | 69% Muggy | 2.7 Moderate | Poor | View Details |
| February | 8°C / -2°C | 5°C / -6°C | 8days (68 mm) Wet | 6.9h Fair | 67% Muggy | 3.8 Moderate | Poor | View Details |
| March | 14°C / 4°C | 12°C / 0°C | 12days (118 mm) Wet | 7.6h Good | 65% Muggy | 5.1 High | Fair | View Details |
| April | 19°C / 9°C | 18°C / 6°C | 11days (128 mm) Wet | 9h Good | 65% Muggy | 5.7 High | Good | View Details |
| May best | 24°C / 15°C | 25°C / 14°C | 13days (127 mm) Wet | 9.9h Good | 70% Muggy | 6.9 High | Excellent | View Details |
| June best | 30°C / 20°C | 32°C / 21°C | 10days (91 mm) Wet | 12h Excellent | 67% Muggy | 7.4 Very High | Excellent | View Details |
| July | 31°C / 22°C | 35°C / 25°C | 12days (115 mm) Wet | 11.9h Excellent | 72% Muggy | 7.4 Very High | Fair | View Details |
| August best | 29°C / 21°C | 33°C / 23°C | 10days (113 mm) Wet | 11h Excellent | 72% Muggy | 6.8 High | Excellent | View Details |
| September best | 27°C / 18°C | 29°C / 19°C | 7days (75 mm) Good | 10.2h Excellent | 68% Muggy | 5.8 High | Excellent | View Details |
| October best | 21°C / 12°C | 19°C / 10°C | 9days (82 mm) Wet | 7.9h Good | 66% Muggy | 4.3 Moderate | Good | View Details |
| November | 13°C / 4°C | 10°C / 1°C | 8days (71 mm) Wet | 6.8h Fair | 68% Muggy | 3 Moderate | Fair | View Details |
| December | 8°C / 0°C | 4°C / -4°C | 8days (58 mm) Wet | 5.6h Fair | 70% Muggy | 2.3 Moderate | Poor | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 4°C / -4°C . Feb: 8°C / -2°C . Mar: 14°C / 4°C . Apr: 19°C / 9°C . May: 24°C / 15°C . Jun: 30°C / 20°C . Jul: 31°C / 22°C . Aug: 29°C / 21°C . Sep: 27°C / 18°C . Oct: 21°C / 12°C . Nov: 13°C / 4°C . Dec: 8°C / 0°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 74 mm. Feb: 68 mm. Mar: 118 mm. Apr: 128 mm. May: 127 mm. Jun: 91 mm. Jul: 115 mm. Aug: 113 mm. Sep: 75 mm. Oct: 82 mm. Nov: 71 mm. Dec: 58 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 69%. Feb: 67%. Mar: 65%. Apr: 65%. May: 70%. Jun: 67%. Jul: 72%. Aug: 72%. Sep: 68%. Oct: 66%. Nov: 68%. Dec: 70%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 18 km/h . Feb: 19 km/h . Mar: 20 km/h . Apr: 20 km/h . May: 17 km/h . Jun: 15 km/h . Jul: 13 km/h . Aug: 13 km/h . Sep: 14 km/h . Oct: 17 km/h . Nov: 18 km/h . Dec: 18 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Frequently Asked Questions
Old Jamestown has a population of approximately 19.2K.
The best months to visit Old Jamestown are May, June, August, September, October, when temperatures are pleasant and rainfall is lower.
Old Jamestown receives approximately 1120mm of rainfall annually across 116 rainy days.
Old Jamestown is located in United States, in the Americas region.