Johnson Space Center
Kemah, United States

The Johnson Space Center is a NASA facility, research institute, and space center located in Kemah. It serves as a research center and has been operational since 1964.
Planning a visit
The weather in Kemah varies by month. The warmest months are July and August, with daily highs of about 32 °C and lows of 25 °C. June and August have the most rain, with about 18 rainy days each. The coolest period is January, when daily highs reach 17 °C and lows are around 8 °C.
Visitors can reach the center via William P. Hobby Airport in Houston, which is 21 km away. The site is located about 1,952 km from Washington, D.C. For more information, you can visit the official website at https://www.nasa.gov/johnson/.
Weather by month
The warmest month is August, with an average high of 33 °C. Rain is spread fairly evenly through the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 17 | 19 | 22 | 25 | 29 | 31 | 32 | 33 | 30 | 26 | 22 | 18 |
| Average low, °C | 9 | 10 | 13 | 17 | 21 | 24 | 25 | 25 | 23 | 18 | 14 | 10 |
| Rainfall, mm | 116 | 84 | 87 | 82 | 122 | 171 | 125 | 124 | 145 | 135 | 116 | 109 |
| Rainy days | 11 | 8 | 10 | 13 | 16 | 18 | 17 | 18 | 16 | 10 | 10 | 10 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.