Roi Et Threshold Days by Year

13 fixed thresholds counted per year at Roi Et (TH000048405): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roi Et Thresholds

Roi Et: days with a maximum temperature at or above 30 C (86 F) in 60 years, most in 2016 with 324.
Roi Et: days with a maximum temperature at or above 35 C (95 F) in 60 years, most in 2010 with 116.
Roi Et: days with a maximum temperature at or above 90 F (32.2 C) in 60 years, most in 2015 with 251.
Roi Et: days with a maximum temperature at or above 100 F (37.8 C) in 58 years, most in 2016 with 47.
13 fixed thresholds have at least one qualifying day at Roi Et.

Days at or above 30 C (86 F)

60 years with a qualifying day

Days per year at Roi Et with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 324 in 2016.

Days at or above 30 C (86 F) per year at Roi Et
Year	Days	Decade average
1955	296	291.8
1956	277	291.8
1957	309	291.8
1958	285	291.8
1961	296	290.7
1962	280	290.7
1963	290	290.7
1964	286	290.7
1965	321	290.7
1966	318	290.7
1967	259	290.7
1968	299	290.7
1969	267	290.7
1970	274	275.2
1971	247	275.2
1972	289	275.2
1973	276	275.2
1974	271	275.2
1975	273	275.2
1976	268	275.2
1977	290	275.2
1978	268	275.2
1979	296	275.2
1980	284	279.5
1981	286	279.5
1982	279	279.5
1983	271	279.5
1984	274	279.5
1985	288	279.5
1987	282	279.5
1989	272	279.5
1990	291	283.7
1991	281	283.7
1992	264	283.7
1993	280	283.7
1994	292	283.7
1995	279	283.7
1996	272	283.7
1997	297	283.7
1998	313	283.7
1999	268	283.7
2000	277	297.8
2001	283	297.8
2002	299	297.8
2003	304	297.8
2004	316	297.8
2006	317	297.8
2007	297	297.8
2008	276	297.8
2009	311	297.8
2010	312	307.6
2011	264	307.6
2012	322	307.6
2013	295	307.6
2014	314	307.6
2015	322	307.6
2016	324	307.6
2022	288	262.7
2023	300	262.7
2025	200	262.7

For each year, a bar from the first to the last day at Roi Et meeting 30 C (86 F).

First to last qualifying date each year at Roi Et
Year	First date	Last date
1955	1955-01-01	1955-12-31
1956	1956-01-01	1956-12-31
1957	1957-01-02	1957-12-31
1958	1958-01-01	1958-12-30
1961	1961-01-02	1961-12-31
1962	1962-01-06	1962-12-31
1963	1963-01-01	1963-12-31
1964	1964-01-01	1964-12-24
1965	1965-01-04	1965-12-29
1966	1966-01-02	1966-12-26
1967	1967-01-07	1967-12-28
1968	1968-01-07	1968-12-31
1969	1969-01-01	1969-12-27
1970	1970-01-03	1970-12-25
1971	1971-01-13	1971-12-26
1972	1972-01-03	1972-12-31
1973	1973-01-01	1973-12-21
1974	1974-01-12	1974-12-31
1975	1975-01-01	1975-12-09
1976	1976-01-04	1976-12-27
1977	1977-01-02	1977-12-31
1978	1978-01-01	1978-12-31
1979	1979-01-01	1979-12-31
1980	1980-01-01	1980-12-19
1981	1981-01-06	1981-12-31
1982	1982-01-01	1982-12-11
1983	1983-01-01	1983-12-22
1984	1984-01-12	1984-12-21
1985	1985-01-03	1985-12-31
1987	1987-01-01	1987-12-31
1989	1989-01-03	1989-12-31
1990	1990-01-01	1990-12-31
1991	1991-01-01	1991-12-27
1992	1992-01-01	1992-12-31
1993	1993-01-01	1993-12-14
1994	1994-01-02	1994-12-31
1995	1995-01-01	1995-12-19
1996	1996-01-06	1996-12-30
1997	1997-01-04	1997-12-31
1998	1998-01-02	1998-12-31
1999	1999-01-01	1999-12-31
2000	2000-01-01	2000-12-31
2001	2001-01-02	2001-12-20
2002	2002-01-10	2002-12-31
2003	2003-01-01	2003-12-31
2004	2004-01-01	2004-12-30
2006	2006-01-01	2006-12-31
2007	2007-01-01	2007-12-29
2008	2008-01-08	2008-12-30
2009	2009-01-06	2009-12-31
2010	2010-01-01	2010-12-25
2011	2011-01-03	2011-12-30
2012	2012-01-02	2012-12-29
2013	2013-01-02	2013-12-14
2014	2014-01-02	2014-12-28
2015	2015-01-04	2015-12-31
2016	2016-01-01	2016-12-27
2022	2022-01-01	2022-12-28
2023	2023-01-04	2023-12-31
2025	2025-01-02	2025-08-24

Every Fixed Threshold

Fixed thresholds at Roi Et
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	60	324	2016	200
35 C (95 F): Days	60	116	2010	76
40 C (104 F): Days	22	26	2016	20
90 F (32.2 C): Days	60	251	2015	164
100 F (37.8 C): Days	58	47	2016	24
110 F (43.3 C): Days	1	1	1997	1
20 C (68 F): Tropical nights (min	28	296	1966	131
25 C (77 F): Days with min	28	102	1973	45
10 mm (0.39 in): Days with 10 mm or more rain	49	51	1971	27
25 mm (0.98 in): Days with 25 mm or more rain	49	27	1966	19
50 mm (1.97 in): Days with 50 mm or more rain	49	11	1966	2
100 mm (3.94 in): Days with 100 mm or more rain	21	3	1989	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1964	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

Data for Roi Et 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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

Roi Et Threshold Days by Year

Key Facts for Roi Et Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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