Fort Laramie Weather Records (USC00483485)
Record envelope, standing records and threshold days for Fort Laramie (USC00483485), Wyoming, United States, with 34 years of record.
Key Facts for Fort Laramie
- Fort Laramie (USC00483485) is a weather station in Wyoming, United States at 42.22 latitude and -104.52 longitude, 1,291 m (4,235 ft) above sea level.
- The station reports from 1894 to 1927, 34 years of record.
- 1,464 records set at Fort Laramie still stand.
- Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
- Fort Laramie set a daily record low maximum temperature of 23.9 C (75.0 F) on 19 August 1927.
About the Station
- Location: Wyoming, United States, 42.22 latitude, -104.52 longitude.
- Elevation: 1,291 m (4,235 ft).
- Period of record: 1894 to 1927, 34 years.
- Eligible elements: tmax, tmin.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 22.8 C (73.0 F) | -40.0 C (-40.0 F) | n/a | n/a |
| Feb | 21.1 C (70.0 F) | -44.4 C (-47.9 F) | n/a | n/a |
| Mar | 27.2 C (81.0 F) | -31.7 C (-25.1 F) | n/a | n/a |
| Apr | 33.3 C (91.9 F) | -17.8 C (0.0 F) | n/a | n/a |
| May | 33.9 C (93.0 F) | -8.9 C (16.0 F) | n/a | n/a |
| Jun | 38.9 C (102.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Jul | 41.1 C (106.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Aug | 40.0 C (104.0 F) | -1.7 C (28.9 F) | n/a | n/a |
| Sep | 40.0 C (104.0 F) | -11.1 C (12.0 F) | n/a | n/a |
| Oct | 33.3 C (91.9 F) | -23.9 C (-11.0 F) | n/a | n/a |
| Nov | 27.2 C (81.0 F) | -35.0 C (-31.0 F) | n/a | n/a |
| Dec | 23.9 C (75.0 F) | -40.6 C (-41.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1894 | 17 |
| 1895 | 53 |
| 1896 | 65 |
| 1897 | 38 |
| 1898 | 53 |
| 1899 | 54 |
| 1900 | 54 |
| 1901 | 49 |
| 1902 | 51 |
| 1903 | 50 |
| 1904 | 46 |
| 1905 | 43 |
| 1906 | 42 |
| 1907 | 44 |
| 1908 | 30 |
| 1909 | 57 |
| 1910 | 65 |
| 1911 | 47 |
| 1912 | 40 |
| 1913 | 43 |
| 1914 | 27 |
| 1915 | 42 |
| 1916 | 38 |
| 1917 | 42 |
| 1918 | 39 |
| 1919 | 39 |
| 1920 | 51 |
| 1921 | 52 |
| 1922 | 31 |
| 1923 | 7 |
| 1924 | 47 |
| 1925 | 43 |
| 1926 | 25 |
| 1927 | 40 |
Wettest Day of Each Month
May: 78.5 mm (3.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 60.5 mm (2.4 in) | 25 January 1921 |
| Feb | 25.4 mm (1.0 in) | 19 February 1918 |
| Mar | 33.0 mm (1.3 in) | 30 March 1897 |
| Apr | 58.4 mm (2.3 in) | 30 April 1915 |
| May | 78.5 mm (3.1 in) | 31 May 1908 |
| Jun | 65.5 mm (2.6 in) | 15 June 1901 |
| Jul | 40.9 mm (1.6 in) | 14 July 1918 |
| Aug | 44.2 mm (1.7 in) | 21 August 1918 |
| Sep | 46.7 mm (1.8 in) | 10 September 1912 |
| Oct | 33.0 mm (1.3 in) | 16 October 1915 |
| Nov | 20.6 mm (0.8 in) | 5 November 1922 |
| Dec | 20.8 mm (0.8 in) | 14 December 1925 |
Period of Record Coverage
1894 to 1927| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1894 | 87 | 24% | No |
| 1895 | 363 | 99% | Yes |
| 1896 | 347 | 95% | Yes |
| 1897 | 363 | 99% | Yes |
| 1898 | 365 | 100% | Yes |
| 1899 | 363 | 99% | Yes |
| 1900 | 364 | 100% | Yes |
| 1901 | 360 | 99% | Yes |
| 1902 | 363 | 99% | Yes |
| 1903 | 360 | 99% | Yes |
| 1904 | 360 | 98% | Yes |
| 1905 | 359 | 98% | Yes |
| 1906 | 314 | 86% | No |
| 1907 | 358 | 98% | Yes |
| 1908 | 332 | 91% | Yes |
| 1909 | 346 | 95% | Yes |
| 1910 | 344 | 94% | Yes |
| 1911 | 357 | 98% | Yes |
| 1912 | 328 | 90% | No |
| 1913 | 323 | 88% | No |
| 1914 | 348 | 95% | Yes |
| 1915 | 351 | 96% | Yes |
| 1916 | 346 | 95% | Yes |
| 1917 | 320 | 88% | No |
| 1918 | 342 | 94% | Yes |
| 1919 | 362 | 99% | Yes |
| 1920 | 250 | 68% | No |
| 1921 | 303 | 83% | No |
| 1922 | 359 | 98% | Yes |
| 1923 | 105 | 29% | No |
| 1924 | 363 | 99% | Yes |
| 1925 | 360 | 99% | Yes |
| 1926 | 353 | 97% | Yes |
| 1927 | 235 | 64% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 19 August 1927 | Fort Laramie, US | daily low max | 23.9 C (75.0 F) | 1.7 C (3.1 F) | 31 years | 15 of 100 (Routine) |
| 19 August 1927 | Fort Laramie, US | daily low min | 6.1 C (43.0 F) | 0.6 C (1.1 F) | 29 years | 12 of 100 (Routine) |
| 17 August 1927 | Fort Laramie, US | daily low max | 21.1 C (70.0 F) | 5.0 C (9.0 F) | 16 years | 19 of 100 (Routine) |
| 9 August 1927 | Fort Laramie, US | daily low max | 20.0 C (68.0 F) | 3.9 C (7.0 F) | 20 years | 18 of 100 (Routine) |
| 3 August 1927 | Fort Laramie, US | daily low max | 18.3 C (64.9 F) | 5.6 C (10.1 F) | 12 years | 19 of 100 (Routine) |
| 2 August 1927 | Fort Laramie, US | daily low max | 20.0 C (68.0 F) | 1.1 C (2.0 F) | 5 years | 6 of 100 (Routine) |
| 30 July 1927 | Fort Laramie, US | daily low max (Tie) | 22.8 C (73.0 F) | tie | 10 years | 1 of 100 (Routine) |
| 29 July 1927 | Fort Laramie, US | daily low max | 20.0 C (68.0 F) | 2.2 C (4.0 F) | 12 years | 10 of 100 (Routine) |
| 17 July 1927 | Fort Laramie, US | daily low min | 9.4 C (48.9 F) | 0.6 C (1.1 F) | 30 years | 13 of 100 (Routine) |
| 14 July 1927 | Fort Laramie, US | daily low max | 24.4 C (75.9 F) | 0.6 C (1.1 F) | 31 years | 13 of 100 (Routine) |
| 27 June 1927 | Fort Laramie, US | daily high max | 37.8 C (100.0 F) | 0.6 C (1.1 F) | 5 years | 5 of 100 (Routine) |
| 26 June 1927 | Fort Laramie, US | daily high min | 17.8 C (64.0 F) | 1.7 C (3.1 F) | 27 years | 15 of 100 (Routine) |
| 13 June 1927 | Fort Laramie, US | daily low max | 12.8 C (55.0 F) | 2.8 C (5.0 F) | 9 years | 9 of 100 (Routine) |
| 9 June 1927 | Fort Laramie, US | daily high max | 34.4 C (93.9 F) | 0.5 C (0.9 F) | 6 years | 5 of 100 (Routine) |
| 30 May 1927 | Fort Laramie, US | daily low min (Tie) | 3.3 C (37.9 F) | tie | 21 years | 2 of 100 (Routine) |
| 18 May 1927 | Fort Laramie, US | daily high max | 32.2 C (90.0 F) | 2.2 C (4.0 F) | 29 years | 14 of 100 (Routine) |
| 17 May 1927 | Fort Laramie, US | daily high max | 31.7 C (89.1 F) | 1.1 C (2.0 F) | 29 years | 12 of 100 (Routine) |
| 16 May 1927 | Fort Laramie, US | daily high max | 31.7 C (89.1 F) | 0.6 C (1.1 F) | 9 years | 5 of 100 (Routine) |
| 10 May 1927 | Fort Laramie, US | daily low max | 2.2 C (36.0 F) | 2.2 C (4.0 F) | 8 years | 8 of 100 (Routine) |
| 9 May 1927 | Fort Laramie, US | daily low max | 3.3 C (37.9 F) | 6.7 C (12.1 F) | 1 year | 13 of 100 (Routine) |
Climate Trend
23 complete years, 1895 to 1926| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1895 | 7.8 C | -0.69 C |
| 1896 | 9.1 C | +0.60 C |
| 1897 | 9.2 C | +0.69 C |
| 1898 | 8.0 C | -0.45 C |
| 1899 | 7.4 C | -1.11 C |
| 1900 | 9.9 C | +1.40 C |
| 1901 | 8.8 C | +0.28 C |
| 1902 | 8.7 C | +0.22 C |
| 1903 | 8.3 C | -0.15 C |
| 1905 | 7.7 C | -0.82 C |
| 1907 | 8.3 C | -0.14 C |
| 1909 | 8.1 C | -0.38 C |
| 1910 | 10.0 C | +1.49 C |
| 1911 | 8.8 C | +0.27 C |
| 1914 | 9.3 C | +0.80 C |
| 1915 | 7.6 C | -0.87 C |
| 1916 | 8.0 C | -0.46 C |
| 1918 | 8.2 C | -0.31 C |
| 1919 | 8.4 C | -0.08 C |
| 1922 | 8.3 C | -0.16 C |
| 1924 | 7.6 C | -0.87 C |
| 1925 | 9.0 C | +0.54 C |
| 1926 | 8.8 C | +0.30 C |
This station does not have enough complete years (30 are needed) to fit a temperature trend.
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1894 to 1927| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.1 C (106.0 F) | 1901 | 38.9 C (102.0 F) | 34 |
| Coldest night (TNn) | -44.4 C (-47.9 F) | 1899 | -31.1 C (-24.0 F) | 34 |
| Wettest day (Rx1day) | 78.5 mm (3.1 in) | 1908 | 37.6 mm (1.5 in) | 34 |
| Wettest five days (Rx5day) | 120.9 mm (4.8 in) | 1915 | 51.8 mm (2.0 in) | 33 |
| Longest dry spell (CDD) | 68 days | 1908 | 33 days | 34 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1894 | 32.8 C (91.0 F) |
| 1895 | 38.3 C (100.9 F) |
| 1896 | 38.3 C (100.9 F) |
| 1897 | 40.0 C (104.0 F) |
| 1898 | 38.9 C (102.0 F) |
| 1899 | 39.4 C (102.9 F) |
| 1900 | 39.4 C (102.9 F) |
| 1901 | 41.1 C (106.0 F) |
| 1902 | 39.4 C (102.9 F) |
| 1903 | 38.9 C (102.0 F) |
| 1904 | 40.0 C (104.0 F) |
| 1905 | 38.3 C (100.9 F) |
| 1906 | 37.8 C (100.0 F) |
| 1907 | 37.8 C (100.0 F) |
| 1908 | 37.8 C (100.0 F) |
| 1909 | 38.3 C (100.9 F) |
| 1910 | 40.0 C (104.0 F) |
| 1911 | 39.4 C (102.9 F) |
| 1912 | 37.8 C (100.0 F) |
| 1913 | 40.0 C (104.0 F) |
| 1914 | 37.8 C (100.0 F) |
| 1915 | 37.2 C (99.0 F) |
| 1916 | 38.9 C (102.0 F) |
| 1917 | 39.4 C (102.9 F) |
| 1918 | 37.8 C (100.0 F) |
| 1919 | 38.9 C (102.0 F) |
| 1920 | 38.9 C (102.0 F) |
| 1921 | 40.6 C (105.1 F) |
| 1922 | 38.9 C (102.0 F) |
| 1923 | 18.9 C (66.0 F) |
| 1924 | 37.2 C (99.0 F) |
| 1925 | 38.9 C (102.0 F) |
| 1926 | 38.3 C (100.9 F) |
| 1927 | 37.8 C (100.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1894 | -27.8 C (-18.0 F) |
| 1895 | -32.2 C (-26.0 F) |
| 1896 | -28.9 C (-20.0 F) |
| 1897 | -30.0 C (-22.0 F) |
| 1898 | -31.1 C (-24.0 F) |
| 1899 | -44.4 C (-47.9 F) |
| 1900 | -28.9 C (-20.0 F) |
| 1901 | -40.6 C (-41.1 F) |
| 1902 | -34.4 C (-29.9 F) |
| 1903 | -32.2 C (-26.0 F) |
| 1904 | -26.1 C (-15.0 F) |
| 1905 | -35.6 C (-32.1 F) |
| 1906 | -27.8 C (-18.0 F) |
| 1907 | -28.9 C (-20.0 F) |
| 1908 | -30.6 C (-23.1 F) |
| 1909 | -31.1 C (-24.0 F) |
| 1910 | -24.4 C (-11.9 F) |
| 1911 | -27.8 C (-18.0 F) |
| 1912 | -31.7 C (-25.1 F) |
| 1913 | -40.0 C (-40.0 F) |
| 1914 | -29.4 C (-20.9 F) |
| 1915 | -31.1 C (-24.0 F) |
| 1916 | -35.0 C (-31.0 F) |
| 1917 | -34.4 C (-29.9 F) |
| 1918 | -30.6 C (-23.1 F) |
| 1919 | -40.6 C (-41.1 F) |
| 1920 | -32.2 C (-26.0 F) |
| 1921 | -28.9 C (-20.0 F) |
| 1922 | -31.7 C (-25.1 F) |
| 1923 | -40.0 C (-40.0 F) |
| 1924 | -33.3 C (-27.9 F) |
| 1925 | -30.0 C (-22.0 F) |
| 1926 | -28.3 C (-18.9 F) |
| 1927 | -35.6 C (-32.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1894 | 4.3 mm (0.17 in) |
| 1895 | 38.6 mm (1.5 in) |
| 1896 | 50.8 mm (2.0 in) |
| 1897 | 38.1 mm (1.5 in) |
| 1898 | 25.1 mm (1.0 in) |
| 1899 | 65.3 mm (2.6 in) |
| 1900 | 44.2 mm (1.7 in) |
| 1901 | 65.5 mm (2.6 in) |
| 1902 | 51.3 mm (2.0 in) |
| 1903 | 36.6 mm (1.4 in) |
| 1904 | 31.0 mm (1.2 in) |
| 1905 | 29.7 mm (1.2 in) |
| 1906 | 39.4 mm (1.6 in) |
| 1907 | 29.2 mm (1.1 in) |
| 1908 | 78.5 mm (3.1 in) |
| 1909 | 36.8 mm (1.4 in) |
| 1910 | 33.3 mm (1.3 in) |
| 1911 | 33.0 mm (1.3 in) |
| 1912 | 46.7 mm (1.8 in) |
| 1913 | 37.1 mm (1.5 in) |
| 1914 | 22.1 mm (0.9 in) |
| 1915 | 58.4 mm (2.3 in) |
| 1916 | 30.5 mm (1.2 in) |
| 1917 | 28.2 mm (1.1 in) |
| 1918 | 44.2 mm (1.7 in) |
| 1919 | 18.8 mm (0.7 in) |
| 1920 | 41.1 mm (1.6 in) |
| 1921 | 60.5 mm (2.4 in) |
| 1922 | 38.1 mm (1.5 in) |
| 1923 | 5.8 mm (0.23 in) |
| 1924 | 23.4 mm (0.9 in) |
| 1925 | 41.1 mm (1.6 in) |
| 1926 | 26.2 mm (1.0 in) |
| 1927 | 46.2 mm (1.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1894 | 4.3 mm (0.17 in) |
| 1895 | 110.5 mm (4.4 in) |
| 1896 | 89.4 mm (3.5 in) |
| 1897 | 56.1 mm (2.2 in) |
| 1898 | 58.4 mm (2.3 in) |
| 1899 | 88.4 mm (3.5 in) |
| 1900 | 55.6 mm (2.2 in) |
| 1901 | 75.9 mm (3.0 in) |
| 1902 | 74.4 mm (2.9 in) |
| 1903 | 44.2 mm (1.7 in) |
| 1904 | 61.2 mm (2.4 in) |
| 1905 | 46.5 mm (1.8 in) |
| 1906 | 63.5 mm (2.5 in) |
| 1907 | 43.8 mm (1.7 in) |
| 1908 | 17.8 mm (0.7 in) |
| 1909 | 71.9 mm (2.8 in) |
| 1910 | 40.9 mm (1.6 in) |
| 1911 | 35.5 mm (1.4 in) |
| 1912 | 51.8 mm (2.0 in) |
| 1913 | 59.4 mm (2.3 in) |
| 1914 | 43.7 mm (1.7 in) |
| 1915 | 120.9 mm (4.8 in) |
| 1916 | 33.1 mm (1.3 in) |
| 1917 | 42.5 mm (1.7 in) |
| 1918 | 51.5 mm (2.0 in) |
| 1919 | 29.7 mm (1.2 in) |
| 1920 | 51.9 mm (2.0 in) |
| 1921 | 9.7 mm (0.38 in) |
| 1922 | 52.6 mm (2.1 in) |
| 1923 | n/a |
| 1924 | 32.8 mm (1.3 in) |
| 1925 | 14.2 mm (0.6 in) |
| 1926 | 35.0 mm (1.4 in) |
| 1927 | 59.1 mm (2.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1894 | 22 days |
| 1895 | 30 days |
| 1896 | 32 days |
| 1897 | 28 days |
| 1898 | 29 days |
| 1899 | 40 days |
| 1900 | 41 days |
| 1901 | 33 days |
| 1902 | 45 days |
| 1903 | 36 days |
| 1904 | 41 days |
| 1905 | 34 days |
| 1906 | 34 days |
| 1907 | 48 days |
| 1908 | 68 days |
| 1909 | 36 days |
| 1910 | 64 days |
| 1911 | 56 days |
| 1912 | 47 days |
| 1913 | 28 days |
| 1914 | 52 days |
| 1915 | 59 days |
| 1916 | 23 days |
| 1917 | 28 days |
| 1918 | 27 days |
| 1919 | 32 days |
| 1920 | 39 days |
| 1921 | 16 days |
| 1922 | 1 day |
| 1923 | 1 day |
| 1924 | 21 days |
| 1925 | 7 days |
| 1926 | 8 days |
| 1927 | 1 day |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
23 years with a frostAcross 23 years with a frost, the median last spring frost at Fort Laramie falls on 17 May and the median first autumn frost on 20 September, which leaves a median of 123 days between them.
| Measure | Median, all years | Earliest period | Recent period (1895 to 1926) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 17 May | n/a | 17 May | n/a | n/a |
| First autumn frost | 20 September | n/a | 20 September | n/a | n/a |
| Growing days | 123 days | n/a | 123 days | n/a | n/a |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).