Rock Island, TX
Unincorporated community in Waller County, Texas
Rock Island is a small unincorporated community in Waller County, Texas. It is 5.7 miles SE of Hempstead, the nearest town. Its ZIP code is 77445.
Rock Island at a glance
- State
- Texas
- County
- Waller County
- ZIP code
- 77445
- Nearest town
- Hempstead (5.7 mi)
- Time zone
- America/Chicago
- Coordinates
- 30.1725, -96.1250
Weather in Rock Island now
Loading the National Weather Service forecast…
Rock Island weather by the hour
Rock Island weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Rock Island.
This week in Rock Island
Sunrise, sunset and moon in Rock Island
What is the weather usually like in Rock Island?
Köppen climate classification, calculated from the 1991–2020 normals
- Augustwarmest month · 96°F average high
- Januarycoldest month · 38°F average low
- 44.2 inprecipitation per year · 1,122 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Rock Island: March–April and October–November, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station WASHINGTON SP, TX US (USC00419491), adjusted for the elevation of Rock Island.
Rock Island weather month by month
Sunrise and sunset in Rock Island through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:20 AM | 5:47 PM | 10 h 27 min |
| February | 7:02 AM | 6:14 PM | 11 h 11 min |
| March | 7:32 AM | 7:33 PM | 12 h 1 min |
| April | 6:55 AM | 7:53 PM | 12 h 57 min |
| May | 6:29 AM | 8:12 PM | 13 h 43 min |
| June | 6:21 AM | 8:28 PM | 14 h 7 min |
| July | 6:32 AM | 8:28 PM | 13 h 56 min |
| August | 6:50 AM | 8:07 PM | 13 h 16 min |
| September | 7:07 AM | 7:31 PM | 12 h 23 min |
| October | 7:25 AM | 6:54 PM | 11 h 29 min |
| November | 6:48 AM | 5:29 PM | 10 h 40 min |
| December | 7:11 AM | 5:27 PM | 10 h 15 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Rock Island?
Rock Island has a humid subtropical climate. The warmest month is August, with an average high of 96°F (36°C), and the coldest is January, with average lows of 38°F (4°C).
It gets about 44.2 inches (1,122 mm) of precipitation a year. The wettest month is May and the driest is July.
The best time to visit Rock Island is March–April and October–November. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Rock Island
The closest live webcam is Chappell Hill › West: US290@FM1155, 8.2 miles W of Rock Island.
Webcams: Windy.com. Distances in a straight line from Rock Island.
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Map of Rock Island, TX
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Rock Island Street View
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Questions about Rock Island
Where is Rock Island, TX?
Rock Island is an unincorporated community in Waller County, Texas, 5.7 miles SE of Hempstead.
What county is Rock Island in?
Rock Island is in Waller County, Texas.
What is the ZIP code of Rock Island, TX?
The ZIP code for Rock Island is 77445.
What is the nearest town to Rock Island?
Hempstead, 5.7 miles away.
Are there webcams near Rock Island?
Yes. The closest is Chappell Hill › West: US290@FM1155, 8.2 miles away.
What is the hottest month in Rock Island?
August, with an average high of 96°F (36°C).
What is the coldest month in Rock Island?
January, with an average low of 38°F (4°C).
How much does it rain in Rock Island?
About 44.2 inches (1,122 mm) a year; the wettest month is May.
Does it snow in Rock Island?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Rock Island?
March–April and October–November, when temperatures are most pleasant and rainy days are fewer.
What climate does Rock Island have?
Humid subtropical (Köppen Cfa).
Last updated: