Rota Intl climate by month
Averages and records for each calendar month at Rota Intl, Northern Mariana Islands, from 1993 to 2026. The warmest month is June, averaging 30.4°C; the coolest is January at 28.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 28.7°C | 23.6°C | 31.7°C31 January 1997 | 17.2°C20 January 2017 | 29 / 29 |
| February | 28.8°C | 23.4°C | 31.7°C1 February 2022 | 16.1°C21 February 1995 | 26 / 28 |
| March | 29.1°C | 23.6°C | 31.7°C2 March 1997 | 17.8°C2 March 1997 | 30 / 30 |
| April | 29.4°C | 24.1°C | 31.7°C5 April 2015 | 20.6°C4 April 2002 | 28 / 30 |
| May | 30.0°C | 24.6°C | 32.2°C30 May 1997 | 18.9°C12 May 2011 | 27 / 29 |
| June | 30.4°C | 24.9°C | 35.6°C9 June 1995 | 18.3°C4 June 2011 | 27 / 29 |
| July | 30.2°C | 24.4°C | 32.8°C20 July 1994 | 19.4°C11 July 2011 | 28 / 30 |
| August | 29.9°C | 24.1°C | 33.3°C16 August 2025 | 17.8°C21 August 2010 | 30 / 33 |
| September | 29.9°C | 24.2°C | 35.6°C13 September 2014 | 17.8°C23 September 2011 | 29 / 31 |
| October | 29.9°C | 24.2°C | 32.2°C21 October 1994 | 17.2°C4 October 2014 | 30 / 31 |
| November | 29.9°C | 24.5°C | 32.2°C4 November 1996 | 20.6°C4 November 2008 | 27 / 27 |
| December | 29.3°C | 24.2°C | 31.7°C27 December 2015 | 19.4°C27 December 2016 | 28 / 30 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 26 to 30 years each.
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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.