Big Horn Weather Records (USC00480680)

Record envelope, standing records and threshold days for Big Horn (USC00480680), Wyoming, United States, with 78 years of record.

Key Facts for Big Horn

Big Horn (USC00480680) is a weather station in Wyoming, United States at 44.68 latitude and -107.01 longitude, 1,283 m (4,208 ft) above sea level.
The station reports from 1949 to 2026, 78 years of record.
1,464 records set at Big Horn still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Wyoming, United States, 44.68 latitude, -107.01 longitude.
Elevation: 1,283 m (4,208 ft).
Period of record: 1949 to 2026, 78 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

37 days at or beyond a record

The band shows the record high and record low for each calendar day at Big Horn. The lines show the 2026 daily maximum and minimum. 37 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Big Horn, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	21.7 C (71.1 F)	-36.1 C (-33.0 F)	13.9 C (57.0 F)	-24.4 C (-11.9 F)
Feb	22.2 C (72.0 F)	-32.8 C (-27.0 F)	20.6 C (69.1 F)	-31.1 C (-24.0 F)
Mar	26.1 C (79.0 F)	-27.8 C (-18.0 F)	26.1 C (79.0 F)	-10.0 C (14.0 F)
Apr	30.0 C (86.0 F)	-18.9 C (-2.0 F)	26.7 C (80.1 F)	-6.7 C (19.9 F)
May	33.3 C (91.9 F)	-6.7 C (19.9 F)	29.4 C (84.9 F)	-0.6 C (30.9 F)
Jun	38.9 C (102.0 F)	-1.7 C (28.9 F)	31.1 C (88.0 F)	1.7 C (35.1 F)
Jul	38.9 C (102.0 F)	4.4 C (39.9 F)	35.6 C (96.1 F)	6.7 C (44.1 F)
Aug	38.3 C (100.9 F)	1.1 C (34.0 F)	37.2 C (99.0 F)	6.7 C (44.1 F)
Sep	38.3 C (100.9 F)	-8.9 C (16.0 F)	30.6 C (87.1 F)	1.1 C (34.0 F)
Oct	32.8 C (91.0 F)	-21.7 C (-7.1 F)	28.3 C (82.9 F)	-5.0 C (23.0 F)
Nov	25.6 C (78.1 F)	-26.7 C (-16.1 F)	22.8 C (73.0 F)	-20.0 C (-4.0 F)
Dec	23.3 C (73.9 F)	-33.3 C (-27.9 F)	19.4 C (66.9 F)	-21.7 C (-7.1 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at Big Horn still stand. 2009 holds the most, with 111.

Standing records at Big Horn by the year they were set
Year set	Standing records
2006	45
2007	76
2008	77
2009	111
2010	63
2011	74
2012	93
2013	66
2014	88
2015	59
2016	66
2017	94
2018	53
2019	64
2020	81
2021	73
2022	79
2023	50
2024	82
2025	70

Wettest Day of Each Month

Jun: 96.3 mm (3.8 in)

The wettest day on record for each calendar month at Big Horn. The most was 96.3 mm (3.8 in) on 11 June 2015.

Record daily precipitation for each month at Big Horn
Month	Record daily precipitation (mm)	Date
Jan	15.2 mm (0.6 in)	15 January 1953
Feb	22.4 mm (0.9 in)	9 February 1955
Mar	39.1 mm (1.5 in)	29 March 2007
Apr	69.6 mm (2.7 in)	23 April 1958
May	59.9 mm (2.4 in)	6 May 2007
Jun	96.3 mm (3.8 in)	11 June 2015
Jul	65.3 mm (2.6 in)	13 July 1952
Aug	38.9 mm (1.5 in)	3 August 1953
Sep	46.2 mm (1.8 in)	9 September 2022
Oct	66.3 mm (2.6 in)	7 October 2011
Nov	22.9 mm (0.9 in)	17 November 2016
Dec	17.3 mm (0.7 in)	3 December 2013

Period of Record Coverage

2006 to 2025

20 years of record at Big Horn, 2006 to 2025. 1 years have data for under 90 percent of days and are left out of rankings: 2006.

Days with data per year at Big Horn
Year	Days with data	Share of year	Complete
2006	170	47%	No
2007	357	98%	Yes
2008	361	99%	Yes
2009	364	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	364	99%	Yes
2013	363	99%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	365	100%	Yes
2020	365	100%	Yes
2021	365	100%	Yes
2022	365	100%	Yes
2023	365	100%	Yes
2024	366	100%	Yes
2025	363	99%	Yes

Latest Records

No records were set at this station in the latest data.

Climate Trend

19 complete years, 2007 to 2025

One stripe for each of 19 complete years at Big Horn, 2007 to 2025. Blue stripes are years cooler than the station's own mean of 7.6 C (45.7 F); red stripes are warmer. The coolest year was 2019, at 5.8 C (42.4 F), and the warmest was 2012, at 9.1 C (48.3 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Big Horn as warming stripes, 2007 to 2025
Year	Annual mean temperature	Difference from the station mean
2007	8.2 C	+0.61 C
2008	6.8 C	-0.75 C
2009	6.8 C	-0.83 C
2010	7.3 C	-0.25 C
2011	7.1 C	-0.52 C
2012	9.1 C	+1.46 C
2013	7.3 C	-0.26 C
2014	7.0 C	-0.63 C
2015	8.5 C	+0.92 C
2016	8.6 C	+1.03 C
2017	7.7 C	+0.06 C
2018	6.6 C	-1.01 C
2019	5.8 C	-1.83 C
2020	7.7 C	+0.15 C
2021	7.9 C	+0.30 C
2022	7.3 C	-0.26 C
2023	7.7 C	+0.09 C
2024	8.7 C	+1.06 C
2025	8.3 C	+0.66 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

1949 to 2026

Yearly extremes at Big Horn: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.1 C (106.0 F)	2026	37.2 C (99.0 F)	21
Coldest night (TNn)	-36.1 C (-33.0 F)	2024	-28.3 C (-18.9 F)	21
Wettest day (Rx1day)	96.3 mm (3.8 in)	2015	40.6 mm (1.6 in)	31
Wettest five days (Rx5day)	109.2 mm (4.3 in)	2007	64.7 mm (2.5 in)	31
Longest dry spell (CDD)	48 days	2012	26 days	31

Hottest day (TXx)

The hottest day of the year at Big Horn, 1949 to 2026. The record is 41.1 C (106.0 F) in 2026, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Big Horn by year
Year	Hottest day (TXx)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
2006	38.9 C (102.0 F)
2007	37.8 C (100.0 F)
2008	37.8 C (100.0 F)
2009	34.4 C (93.9 F)
2010	36.7 C (98.1 F)
2011	36.1 C (97.0 F)
2012	38.9 C (102.0 F)
2013	36.7 C (98.1 F)
2014	37.2 C (99.0 F)
2015	37.2 C (99.0 F)
2016	36.7 C (98.1 F)
2017	37.2 C (99.0 F)
2018	37.8 C (100.0 F)
2019	33.9 C (93.0 F)
2020	37.2 C (99.0 F)
2021	38.9 C (102.0 F)
2022	38.3 C (100.9 F)
2023	35.0 C (95.0 F)
2024	37.8 C (100.0 F)
2025	37.2 C (99.0 F)
2026	41.1 C (106.0 F)

Coldest night (TNn)

The coldest night of the year at Big Horn, 1949 to 2026. The record is -36.1 C (-33.0 F) in 2024, marked on the chart; the median year is -28.3 C (-18.9 F).

Coldest night (TNn) at Big Horn by year
Year	Coldest night (TNn)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
2006	-21.1 C (-6.0 F)
2007	-28.3 C (-18.9 F)
2008	-28.9 C (-20.0 F)
2009	-27.2 C (-17.0 F)
2010	-26.7 C (-16.1 F)
2011	-29.4 C (-20.9 F)
2012	-23.3 C (-9.9 F)
2013	-33.3 C (-27.9 F)
2014	-32.2 C (-26.0 F)
2015	-25.6 C (-14.1 F)
2016	-31.1 C (-24.0 F)
2017	-24.4 C (-11.9 F)
2018	-27.2 C (-17.0 F)
2019	-27.8 C (-18.0 F)
2020	-22.8 C (-9.0 F)
2021	-32.8 C (-27.0 F)
2022	-33.3 C (-27.9 F)
2023	-32.2 C (-26.0 F)
2024	-36.1 C (-33.0 F)
2025	-31.1 C (-24.0 F)
2026	-23.9 C (-11.0 F)

Wettest day (Rx1day)

The wettest day of the year at Big Horn, 1949 to 2026. The record is 96.3 mm (3.8 in) in 2015, marked on the chart; the median year is 40.6 mm (1.6 in).

Wettest day (Rx1day) at Big Horn by year
Year	Wettest day (Rx1day)
1949	21.6 mm (0.9 in)
1950	20.6 mm (0.8 in)
1951	44.5 mm (1.8 in)
1952	65.3 mm (2.6 in)
1953	38.9 mm (1.5 in)
1954	13.2 mm (0.5 in)
1955	40.6 mm (1.6 in)
1956	33.8 mm (1.3 in)
1957	64.0 mm (2.5 in)
1958	69.6 mm (2.7 in)
2006	32.0 mm (1.3 in)
2007	72.4 mm (2.9 in)
2008	46.7 mm (1.8 in)
2009	28.7 mm (1.1 in)
2010	38.9 mm (1.5 in)
2011	66.3 mm (2.6 in)
2012	24.1 mm (0.9 in)
2013	46.2 mm (1.8 in)
2014	31.5 mm (1.2 in)
2015	96.3 mm (3.8 in)
2016	40.9 mm (1.6 in)
2017	43.7 mm (1.7 in)
2018	22.1 mm (0.9 in)
2019	48.8 mm (1.9 in)
2020	26.2 mm (1.0 in)
2021	28.4 mm (1.1 in)
2022	46.2 mm (1.8 in)
2023	41.1 mm (1.6 in)
2024	27.4 mm (1.1 in)
2025	54.4 mm (2.1 in)
2026	31.2 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Big Horn, 1949 to 2026. The record is 109.2 mm (4.3 in) in 2007, marked on the chart; the median year is 64.7 mm (2.5 in).

Wettest five days (Rx5day) at Big Horn by year
Year	Wettest five days (Rx5day)
1949	22.9 mm (0.9 in)
1950	33.0 mm (1.3 in)
1951	92.5 mm (3.6 in)
1952	91.0 mm (3.6 in)
1953	42.5 mm (1.7 in)
1954	34.5 mm (1.4 in)
1955	57.4 mm (2.3 in)
1956	65.9 mm (2.6 in)
1957	82.3 mm (3.2 in)
1958	85.8 mm (3.4 in)
2006	44.2 mm (1.7 in)
2007	109.2 mm (4.3 in)
2008	94.1 mm (3.7 in)
2009	36.5 mm (1.4 in)
2010	54.9 mm (2.2 in)
2011	94.0 mm (3.7 in)
2012	35.6 mm (1.4 in)
2013	64.7 mm (2.5 in)
2014	40.4 mm (1.6 in)
2015	103.6 mm (4.1 in)
2016	83.6 mm (3.3 in)
2017	105.2 mm (4.1 in)
2018	60.2 mm (2.4 in)
2019	68.3 mm (2.7 in)
2020	40.7 mm (1.6 in)
2021	58.8 mm (2.3 in)
2022	79.3 mm (3.1 in)
2023	69.3 mm (2.7 in)
2024	49.2 mm (1.9 in)
2025	69.6 mm (2.7 in)
2026	50.1 mm (2.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Big Horn, 1949 to 2026. The record is 48 days in 2012, marked on the chart; the median year is 26 days.

Longest dry spell (CDD) at Big Horn by year
Year	Longest dry spell (CDD)
1949	13 days
1950	25 days
1951	16 days
1952	29 days
1953	27 days
1954	20 days
1955	21 days
1956	37 days
1957	26 days
1958	25 days
2006	37 days
2007	46 days
2008	24 days
2009	22 days
2010	20 days
2011	25 days
2012	48 days
2013	38 days
2014	27 days
2015	26 days
2016	35 days
2017	29 days
2018	35 days
2019	26 days
2020	23 days
2021	24 days
2022	27 days
2023	24 days
2024	34 days
2025	19 days
2026	45 days

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.

Download the Data

Data for Big Horn standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Big Horn threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).