Best time to visit Manhattan Project National Historical Park
May, October and November are the best balance at Manhattan Project National Historical Park: mild and dry for the park (average highs 59° to 78°F), with crowds from moderate to very busy. July is busiest, with about 8,800 visitors. January is the quietest, with highs near 46°F.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
Month by month
- Station
- Kingston, TN USC00404871
- Lat / lon
- 35.86, -84.53
- Elevation
- 814 ft
- From park center
- 9.3 mi
- Normals
- 1991–2020
- Visits
- 2023–2025
| Field | Jan | Feb | Mar | Apr | Maybest | Jun | Jul | Aug | Sep | Octbest | Novbest | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High, °F | 46° | 51° | 61° | 70° | 78° | 85° | 88° | 87° | 82° | 72° | 59° | 49° | 69° |
| Low, °F | 28° | 30° | 37° | 46° | 56° | 64° | 68° | 67° | 61° | 48° | 37° | 32° | 48° |
| Precipitation, in | 5.5 | 6.0 | 5.4 | 5.5 | 4.7 | 4.7 | 5.2 | 3.9 | 4.3 | 3.2 | 4.5 | 6.0 | 58.8 |
| Snow, in | 1.1 | 0.6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 1.8 |
| Daylight, h:mm | 9:58 | 10:49 | 11:51 | 13:03 | 14:03 | 14:35 | 14:22 | 13:31 | 12:22 | 11:13 | 10:13 | 9:44 | |
| Visitors, thousands | 2 | 3 | 5 | 6 | 7 | 8 | 9 | 7 | 6 | 6 | 3 | 3 | 64 |
| Crowds | Quiet | Quiet | Busy | Busy | Very busy | Very busy | Very busy | Busy | Busy | Busy | Moderate | Quiet | |
| Weather | Cool | Cool | Mild, wet | Mild, wet | Mild | Hot | Hot | Hot | Hot | Mild | Mild | Cool |
| Month | High °F | Low °F | Precip., in | Snow, in | Daylight | Visitors | Crowds | Weather |
|---|---|---|---|---|---|---|---|---|
| January | 46° | 28° | 5.5 | 1.1 | 9:58 | 1,800 | Quiet | Cool |
| February | 51° | 30° | 6.0 | 0.6 | 10:49 | 2,600 | Quiet | Cool |
| March | 61° | 37° | 5.4 | 0 | 11:51 | 5,400 | Busy | Mild, wet |
| April | 70° | 46° | 5.5 | 0 | 13:03 | 6,200 | Busy | Mild, wet |
| Maybest | 78° | 56° | 4.7 | 0 | 14:03 | 7,100 | Very busy | Mild |
| June | 85° | 64° | 4.7 | 0 | 14:35 | 7,600 | Very busy | Hot |
| July | 88° | 68° | 5.2 | 0 | 14:22 | 8,800 | Very busy | Hot |
| August | 87° | 67° | 3.9 | 0 | 13:31 | 6,800 | Busy | Hot |
| September | 82° | 61° | 4.3 | 0 | 12:22 | 6,100 | Busy | Hot |
| Octoberbest | 72° | 48° | 3.2 | 0 | 11:13 | 5,500 | Busy | Mild |
| Novemberbest | 59° | 37° | 4.5 | 0 | 10:13 | 3,200 | Moderate | Mild |
| December | 49° | 32° | 6.0 | 0.1 | 9:44 | 2,500 | Quiet | Cool |
| Year | 69° | 48° | 58.8 | 1.8 | 64,000 | |||
Year: average high and low, total precipitation and snowfall, total visitors. T = trace (under 0.05 in). – = not measured at this station. Updated .
- Hottest July, average high 88°F
- Coldest nights January, average low 28°F
- Source NOAA National Centers for Environmental Information; National Park Service
- Visitors a year about 64,000 (2023–2025 average)
- States Tennessee, New Mexico and Washington
Closures, reservations and alerts: Manhattan Project National Historical Park on nps.gov
Nearby
- Obed Wild and Scenic RiverBest: May, Oct and Nov · Tennessee
- Big South Fork National River and Recreation AreaBest: May, Sep and Nov · Tennessee and Kentucky
- Great Smoky Mountains National ParkBest: Sep, Oct and Nov · Tennessee and North Carolina
- Cumberland Gap National Historical ParkBest: May, Sep and Nov · Kentucky and Virginia