Editing Rolla, North Dakota (section)

===Climate===
Like most of [[North Dakota]], Rolla has a [[humid continental climate]] ([[Köppen climate classification|Köppen]] ''Dfb''/''Dwb''), characterized by warm summers and frigid, dry winters. With an average January low of {{convert|-2.4|F|C|1|disp=or}} it is one of the coldest places in the contiguous United States and is comparably cold in winter to [[Nome, Alaska]] sixteen degrees further north. As many as 48 mornings can be expected to fall to or below {{convert|0|F|C|1|disp=or}} based on 1981–2010 data, although based on the cooler 1971–2000 data the figure was as many as 57.4 mornings this cold,<ref>{{cite web|url=https://www.ncdc.noaa.gov/climatenormals/clim20/nd/327664.pdf|publisher=National Oceanic and Atmospheric Administration|title=Climatography of the United States No. 20 – 1971-2000: Rolla 3NW, ND}}</ref> and all but one morning fell to or below {{convert|0|F|C|1}} in January 1950 and January 1982. Unlike more westerly parts of the Dakotas, above-freezing temperatures are rare during winter: only sixteen afternoons top freezing during the three winter months, and fewer than half of all afternoons in March and November. The average window for zero temperatures is November 26 to March 13, and for freezing temperatures September 25 to May 17, allowing a frost-free season of 130 days.

Snowfall is limited by the dryness of the winter climate: the most in one month being {{convert|35.5|in|m|2}} in January 1989 and the most in one season {{convert|73.6|in|m|2}} between July 1975 and June 1976; in contrast as little as {{convert|19.9|in|m|2}} fell between July 1957 and June 1958.

Summers in Rolla are warm with occasional heavy rainfall from thunderstorms, although when a hot southerly flow occurs temperatures can become uncomfortably hot. The hottest temperature recorded in Rolla has been {{convert|101|F|C|1|disp=or}} on August 7, 1949 and the hottest mean monthly maximum {{convert|86.5|F|C|1|disp=or}} in August 1961; in contrast August 2004 had a mean maximum as low as {{convert|65.2|F|C}} and did not rise above {{convert|77|F|C|disp=or}}. The wettest month by far has been June 1954 with {{convert|13.12|in|mm|1}} including a daily fall of {{convert|3.29|in|mm|1}} on June 7; however no other month has passed {{convert|8.50|in|mm|0|disp=or}}. The wettest calendar year has been 1905 with {{convert|30.39|in|mm|1}} and the driest 1988 with {{convert|11.23|in|mm|1}}.
{{Weather box
|location = Rolla 1NE, North Dakota, 1991–2020 normals, 1904-2020 extremes: 1833ft (559m)
|single line = Yes

|Jan record high F = 55
|Feb record high F = 58
|Mar record high F = 75
|Apr record high F = 94
|May record high F = 94
|Jun record high F = 97
|Jul record high F = 100
|Aug record high F = 101
|Sep record high F = 98
|Oct record high F = 90
|Nov record high F = 75
|Dec record high F = 64
|year record high F =

|Jan avg record high F = 41.7
|Feb avg record high F = 45.2
|Mar avg record high F = 52.6
|Apr avg record high F = 73.6
|May avg record high F = 82.3
|Jun avg record high F = 84.8
|Jul avg record high F = 87.3
|Aug avg record high F = 87.9
|Sep avg record high F = 83.7
|Oct avg record high F = 73.9
|Nov avg record high F = 54.5
|Dec avg record high F = 41.1
|year avg record high F = 90.3

|Jan high F = 15.2
|Feb high F = 18.6
|Mar high F = 30.0
|Apr high F = 47.6
|May high F = 61.8
|Jun high F = 70.2
|Jul high F = 74.6
|Aug high F = 74.7
|Sep high F = 65.1
|Oct high F = 50.0
|Nov high F = 32.6
|Dec high F = 19.6
|year high F =

|Jan mean F = 5.9
|Feb mean F = 9.3
|Mar mean F = 20.8
|Apr mean F = 36.3
|May mean F = 49.9
|Jun mean F = 59.8
|Jul mean F = 64.4
|Aug mean F = 63.2
|Sep mean F = 53.8
|Oct mean F = 39.7
|Nov mean F = 24.1
|Dec mean F = 11.3
|year mean F = 

|Jan low F = -3.4
|Feb low F = 0.0
|Mar low F = 11.5
|Apr low F = 24.9
|May low F = 38.0
|Jun low F = 49.3
|Jul low F = 54.1
|Aug low F = 51.7
|Sep low F = 42.6
|Oct low F = 29.4
|Nov low F = 15.6
|Dec low F = 2.9
|year low F =

|Jan avg record low F = -25.0
|Feb avg record low F = -22.4
|Mar avg record low F = -8.9
|Apr avg record low F = 10.9
|May avg record low F = 24.8
|Jun avg record low F = 39.1
|Jul avg record low F = 45.0
|Aug avg record low F = 43.0
|Sep avg record low F = 30.9
|Oct avg record low F = 14.5
|Nov avg record low F = -3.3
|Dec avg record low F = -19.4
|year avg record low F = -29.5

| Jan record low F = -40
| Feb record low F = -43
| Mar record low F = -31
| Apr record low F = -20
| May record low F = 11
| Jun record low F = 29
| Jul record low F = 36
| Aug record low F = 33
| Sep record low F = 17
| Oct record low F = -1
| Nov record low F = -24
| Dec record low F = -37
| year record low F =

|precipitation colour = green
|Jan precipitation inch = 0.37
|Feb precipitation inch = 0.43
|Mar precipitation inch = 0.70
|Apr precipitation inch = 1.09
|May precipitation inch = 2.86
|Jun precipitation inch = 3.73
|Jul precipitation inch = 3.33
|Aug precipitation inch = 2.72
|Sep precipitation inch = 1.74
|Oct precipitation inch = 1.21
|Nov precipitation inch = 0.79
|Dec precipitation inch = 0.67
|year precipitation inch =

|Jan snow inch = 2.9
|Feb snow inch = 4.8
|Mar snow inch = 4.1
|Apr snow inch = 1.6
|May snow inch = 1.0
|Jun snow inch = trace
|Jul snow inch = trace
|Aug snow inch = 0.0
|Sep snow inch = 0.0
|Oct snow inch = 0.8
|Nov snow inch = 4.2
|Dec snow inch = 7.1
|year snow inch =

|source 1 = NOAA<ref name = NOAA1>
{{cite web
|url = https://www.ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&startDate=0001-01-01&endDate=9996-12-31&stations=USC00327664&format=pdf
|title = Rolla 1NE, North Dakota 1991-2020 Monthly Normals 
|access-date = December 22, 2023
}}
</ref>
|source 2 = XMACIS (1991-2008 snowfall, records & 1981-2010 monthly max/mins)<ref name = XMACIS>
{{cite web
|url = https://xmacis.rcc-acis.org/
|publisher = National Oceanic and Atmospheric Administration
|title = xmACIS
|access-date = December 22, 2023
}}
</ref>
}}

{{Weather box
|location = Rolla, North Dakota (1981–2010)
|single line = Y
|Jan record high F = 55
|Feb record high F = 58
|Mar record high F = 75
|Apr record high F = 94
|May record high F = 94
|Jun record high F = 97
|Jul record high F = 100
|Aug record high F = 101
|Sep record high F = 98
|Oct record high F = 90
|Nov record high F = 75
|Dec record high F = 64
|year record high F = 101
|Jan high F = 15.3
|Feb high F = 20.0
|Mar high F = 30.1
|Apr high F = 48.8
|May high F = 62.2
|Jun high F = 70.2
|Jul high F = 75.0
|Aug high F = 74.6
|Sep high F = 64.2
|Oct high F = 50.1
|Nov high F = 31.7
|Dec high F = 18.8
|year high F = 46.7

|Jan low F = -2.4
|Feb low F = 1.9
|Mar low F = 13.6
|Apr low F = 28.0
|May low F = 39.7
|Jun low F = 50.3
|Jul low F = 55.7
|Aug low F = 53.5
|Sep low F = 43.4
|Oct low F = 30.8
|Nov low F = 15.9
|Dec low F = 2.4
|year low F = 27.7
|Jan record low F = &minus;40
|Feb record low F = &minus;43
|Mar record low F = &minus;31
|Apr record low F = &minus;20
|May record low F = 11
|Jun record low F = 29
|Jul record low F = 36
|Aug record low F = 33
|Sep record low F = 17
|Oct record low F = &minus;1
|Nov record low F = &minus;24
|Dec record low F = &minus;37
|year record low F = &minus;43
|precipitation colour = green
|Jan precipitation inch = 0.44
|Feb precipitation inch = 0.36
|Mar precipitation inch = 0.68
|Apr precipitation inch = 1.00
|May precipitation inch = 2.42
|Jun precipitation inch = 3.57
|Jul precipitation inch = 2.96
|Aug precipitation inch = 2.35
|Sep precipitation inch = 1.62
|Oct precipitation inch = 1.27
|Nov precipitation inch = 0.75
|Dec precipitation inch = 0.48
|year precipitation inch= 17.88

|Jan snow inch = 5.2
|Feb snow inch = 4.2
|Mar snow inch = 4.7
|Apr snow inch = 1.3
|May snow inch = 0.5
|Jun snow inch = 0.0
|Jul snow inch = 0.0
|Aug snow inch = 0.0
|Sep snow inch = 0.0
|Oct snow inch = 0.6
|Nov snow inch = 3.0
|Dec snow inch = 5.9
|year snow inch = 25.4
|source 1 = NOAA<ref>{{cite web |url = https://w2.weather.gov/climate/xmacis.php?wfo=bis |title = NOWData - NOAA Online Weather Data |publisher = [[National Oceanic and Atmospheric Administration]] |access-date = May 4, 2013}}</ref>
}}