Editing Union County, New Jersey (section)

==Geography==
According to the [[United States Census Bureau|U.S. Census Bureau]], as of the 2020 Census, the county had a total area of {{convert|105.41|sqmi}}, of which {{convert|102.77|sqmi}} was land (97.5%) and {{convert|2.64|sqmi}} was water (2.5%).<ref name=CensusArea>[https://www2.census.gov/geo/docs/maps-data/data/gazetteer/2020_Gazetteer/2020_gaz_counties_34.txt 2020 Census Gazetteer File for Counties in New Jersey], [[United States Census Bureau]]. Accessed April 1, 2023.</ref>

Much of Union County is relatively flat and low-lying. Only in the northwestern corner does any significant relief appear as the [[Watchung Mountains]] cross the county. It is there that highest elevations, two areas approximately {{convert|560|ft}} above sea level, are found in Berkeley Heights.<ref>[http://www.peakbagger.com/list.aspx?lid=13320 New Jersey County High Points], Peakbagger.com. Accessed October 5, 2013.</ref> The lowest elevation is sea level along the eastern shore at the Arthur Kill.

===Rivers, lakes and streams===
*[[Arthur Kill]]
*[[Rahway River]]
*[[Elizabeth River (New Jersey)|Elizabeth River]]
*[[Nomahegan Brook]]
*[[Marshes Creek]]
*[[Morses Creek (New Jersey)|Morses Creek]]
*[[Peach Orchard Brook]]
*[[Robinson's Brook]]
*[[Robinson's Branch Reservoir]]

===Climate and weather===
{{climate chart
|[[Elizabeth, New Jersey]]
|24|39|3.5
|27|42|2.9
|34|51|4.1
|44|62|4.2
|53|72|4.0
|63|82|4.0
|69|86|4.7
|68|84|3.7
|60|77|3.8
|48|65|3.6
|39|55|3.6
|30|44|3.8
|float=right
|units=imperial
|clear=both
|source=The Weather Channel<ref name="weather">[http://www.weather.com/weather/wxclimatology/monthly/graph/USNJ0134 Monthly Averages for Elizabeth, New Jersey], [[The Weather Channel]]. Accessed October 13, 2012.</ref>}}
In recent years,{{when|date=July 2013}} average temperatures in the county seat of Elizabeth have ranged from a low of {{convert|24|F}} in January to a high of {{convert|86|F}} in July, although a record low of {{convert|-14|F}} was recorded in February 1934 and a record high of {{convert|105|F}} was recorded in July 1993. Average monthly precipitation ranged from {{convert|2.99|in}} in February to {{convert|4.76|in}} in July.<ref name="weather"/> In Berkeley Heights average monthly temperatures range from 29.4&nbsp;°F in January to 74.7&nbsp;°F in July.  The climate in the county is hot-summer [[humid continental climate|humid continental]] (''Dfa'') in the west and [[humid subtropical climate|humid subtropical]] (''Cfa'') in the east. The [[hardiness zone]] is 7a west of the Garden State Parkway and 7b to the east. [https://planthardiness.ars.usda.gov/]